87029388 has 36 divisors (see below), whose sum is σ = 225360408. Its totient is φ = 28301760.

The previous prime is 87029381. The next prime is 87029399. The reversal of 87029388 is 88392078.

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

It is a super-2 number, since 2×87029388² = 15148228751309088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87029381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28006 + ... + 30957.

Almost surely, 2^87029388 is an apocalyptic number.

It is an amenable number.

87029388 is an abundant number, since it is smaller than the sum of its proper divisors (138331020).

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

87029388 is a wasteful number, since it uses less digits than its factorization.

87029388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59014 (or 59009 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 87029388 is about 9328.9542822334. The cubic root of 87029388 is about 443.1546491302.

The spelling of 87029388 in words is "eighty-seven million, twenty-nine thousand, three hundred eighty-eight".