87049044 has 36 divisors (see below), whose sum is σ = 232985844. Its totient is φ = 27309312.

The previous prime is 87049019. The next prime is 87049091. The reversal of 87049044 is 44094078.

It can be written as a sum of positive squares in 2 ways, for example, as 67864644 + 19184400 = 8238^2 + 4380^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×87049044² = 15155072122627872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70507 + ... + 71730.

It is an arithmetic number, because the mean of its divisors is an integer number (6471829).

Almost surely, 2^87049044 is an apocalyptic number.

It is an amenable number.

87049044 is an abundant number, since it is smaller than the sum of its proper divisors (145936800).

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

87049044 is a wasteful number, since it uses less digits than its factorization.

87049044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142264 (or 142259 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 87049044 is about 9330.0077170386. The cubic root of 87049044 is about 443.1880094785.

The spelling of 87049044 in words is "eighty-seven million, forty-nine thousand, forty-four".