87404430 has 32 divisors (see below), whose sum is σ = 210345984. Its totient is φ = 23243936.

The previous prime is 87404419. The next prime is 87404431. The reversal of 87404430 is 3440478.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87404431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7687 + ... + 15293.

It is an arithmetic number, because the mean of its divisors is an integer number (6573312).

Almost surely, 2^87404430 is an apocalyptic number.

87404430 is an abundant number, since it is smaller than the sum of its proper divisors (122941554).

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

87404430 is a wasteful number, since it uses less digits than its factorization.

87404430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8000.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 87404430 is about 9349.0336399010. The cubic root of 87404430 is about 443.7903096358.

The spelling of 87404430 in words is "eighty-seven million, four hundred four thousand, four hundred thirty".