87862290 has 32 divisors (see below), whose sum is σ = 223274880. Its totient is φ = 22051584.

The previous prime is 87862261. The next prime is 87862321. The reversal of 87862290 is 9226878.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85630 + ... + 86649.

It is an arithmetic number, because the mean of its divisors is an integer number (6977340).

Almost surely, 2^87862290 is an apocalyptic number.

87862290 is an abundant number, since it is smaller than the sum of its proper divisors (135412590).

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

87862290 is a wasteful number, since it uses less digits than its factorization.

87862290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172306.

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

The square root of 87862290 is about 9373.4886781817. The cubic root of 87862290 is about 444.5638785733.

The spelling of 87862290 in words is "eighty-seven million, eight hundred sixty-two thousand, two hundred ninety".