87801012 has 72 divisors (see below), whose sum is σ = 244628384. Its totient is φ = 26381376.

The previous prime is 87800987. The next prime is 87801013. The reversal of 87801012 is 21010878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87801013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17943 + ... + 22305.

Almost surely, 2^87801012 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 87801012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122314192).

87801012 is an abundant number, since it is smaller than the sum of its proper divisors (156827372).

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

87801012 is a wasteful number, since it uses less digits than its factorization.

87801012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4429 (or 4424 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 27.

The square root of 87801012 is about 9370.2194211235. The cubic root of 87801012 is about 444.4605034660.

The spelling of 87801012 in words is "eighty-seven million, eight hundred one thousand, twelve".