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5870981 = 19308999
BaseRepresentation
bin10110011001010110000101
3102001021110202
4112121112011
53000332411
6325500245
7100621364
oct26312605
912037422
105870981
11334aa56
121b71685
1312a736c
14acb7db
157ae83b
hex599585

5870981 has 4 divisors (see below), whose sum is σ = 6180000. Its totient is φ = 5561964.

The previous prime is 5870959. The next prime is 5870987. The reversal of 5870981 is 1890785.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-5870981 is a prime.

It is a super-2 number, since 2×58709812 = 68936835804722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5870987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154481 + ... + 154518.

It is an arithmetic number, because the mean of its divisors is an integer number (1545000).

Almost surely, 25870981 is an apocalyptic number.

It is an amenable number.

5870981 is a deficient number, since it is larger than the sum of its proper divisors (309019).

5870981 is a wasteful number, since it uses less digits than its factorization.

5870981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309018.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 5870981 is about 2423.0107304756. The cubic root of 5870981 is about 180.4001488848.

The spelling of 5870981 in words is "five million, eight hundred seventy thousand, nine hundred eighty-one".

Divisors: 1 19 308999 5870981