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8253408 = 253149577
BaseRepresentation
bin11111011110111111100000
3120112022112210
4133132333200
54103102113
6452522120
7130103262
oct37367740
916468483
108253408
1147279a9
122920340
13192c897
14114bb32
15ad06c3
hex7defe0

8253408 has 48 divisors (see below), whose sum is σ = 21848400. Its totient is φ = 2727936.

The previous prime is 8253397. The next prime is 8253431. The reversal of 8253408 is 8043528.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×82534082 = 136237487228928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14016 + ... + 14592.

It is an arithmetic number, because the mean of its divisors is an integer number (455175).

Almost surely, 28253408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8253408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10924200).

8253408 is an abundant number, since it is smaller than the sum of its proper divisors (13594992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8253408 is a wasteful number, since it uses less digits than its factorization.

8253408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739 (or 731 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 8253408 is about 2872.8745186659. The cubic root of 8253408 is about 202.0898205260.

The spelling of 8253408 in words is "eight million, two hundred fifty-three thousand, four hundred eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 149 298 447 577 596 894 1154 1192 1731 1788 2308 2384 3462 3576 4616 4768 6924 7152 9232 13848 14304 18464 27696 55392 85973 171946 257919 343892 515838 687784 1031676 1375568 2063352 2751136 4126704 8253408