87406044 has 72 divisors (see below), whose sum is σ = 237427344. Its totient is φ = 24921600.

The previous prime is 87406043. The next prime is 87406069. The reversal of 87406044 is 44060478.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 87405996 and 87406014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87406043) 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, 22914 + ... + 26454.

It is an arithmetic number, because the mean of its divisors is an integer number (3297602).

Almost surely, 2^87406044 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 87406044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118713672).

87406044 is an abundant number, since it is smaller than the sum of its proper divisors (150021300).

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

87406044 is a wasteful number, since it uses less digits than its factorization.

87406044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3587 (or 3574 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 87406044 is about 9349.1199585843. The cubic root of 87406044 is about 443.7930412790.

The spelling of 87406044 in words is "eighty-seven million, four hundred six thousand, forty-four".