87934812 has 144 divisors (see below), whose sum is σ = 266595840. Its totient is φ = 22353408.

The previous prime is 87934811. The next prime is 87934823. The reversal of 87934812 is 21843978.

87934812 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×87934812² = 15465062322950688, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

87934812 is strictly pandigital in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87934811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 189693 + ... + 190155.

It is an arithmetic number, because the mean of its divisors is an integer number (1851360).

Almost surely, 2^87934812 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 87934812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133297920).

87934812 is an abundant number, since it is smaller than the sum of its proper divisors (178661028).

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

87934812 is a wasteful number, since it uses less digits than its factorization.

87934812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520 (or 511 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 87934812 is about 9377.3563438743. The cubic root of 87934812 is about 444.6861600630.

The spelling of 87934812 in words is "eighty-seven million, nine hundred thirty-four thousand, eight hundred twelve".