87404231 has 8 divisors (see below), whose sum is σ = 90645600. Its totient is φ = 84178080.

The previous prime is 87404203. The next prime is 87404243. The reversal of 87404231 is 13240478.

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

It is a cyclic number.

It is not a de Polignac number, because 87404231 - 2²⁶ = 20295367 is a prime.

It is a super-2 number, since 2×87404231² = 15278999193402722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87404194 and 87404203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87404281) 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, 8630 + ... + 15788.

It is an arithmetic number, because the mean of its divisors is an integer number (11330700).

Almost surely, 2^87404231 is an apocalyptic number.

87404231 is a deficient number, since it is larger than the sum of its proper divisors (3241369).

87404231 is a wasteful number, since it uses less digits than its factorization.

87404231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7609.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 87404231 is about 9349.0229970837. The cubic root of 87404231 is about 443.7899728324.

The spelling of 87404231 in words is "eighty-seven million, four hundred four thousand, two hundred thirty-one".