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87980413 = 3722310663
BaseRepresentation
bin1010011111001…
…11100101111101
320010112212102211
411033213211331
5140010333123
612421420421
72115551443
oct517474575
9203485384
1087980413
1145731a94
122556a711
13152c5921
14b982b93
157acd40d
hex53e797d

87980413 has 8 divisors (see below), whose sum is σ = 90771968. Its totient is φ = 85210704.

The previous prime is 87980369. The next prime is 87980479. The reversal of 87980413 is 31408978.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87980413 - 217 = 87849341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87980513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2920 + ... + 13582.

It is an arithmetic number, because the mean of its divisors is an integer number (11346496).

Almost surely, 287980413 is an apocalyptic number.

It is an amenable number.

87980413 is a deficient number, since it is larger than the sum of its proper divisors (2791555).

87980413 is a wasteful number, since it uses less digits than its factorization.

87980413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10923.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 87980413 is about 9379.7874709398. The cubic root of 87980413 is about 444.7630148333.

The spelling of 87980413 in words is "eighty-seven million, nine hundred eighty thousand, four hundred thirteen".

Divisors: 1 37 223 8251 10663 394531 2377849 87980413