87926780 has 24 divisors (see below), whose sum is σ = 187405008. Its totient is φ = 34645248.

The previous prime is 87926767. The next prime is 87926789. The reversal of 87926780 is 8762978.

It is a super-2 number, since 2×87926780² = 15462237282336800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87926789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31469 + ... + 34148.

It is an arithmetic number, because the mean of its divisors is an integer number (7808542).

Almost surely, 2^87926780 is an apocalyptic number.

It is an amenable number.

87926780 is an abundant number, since it is smaller than the sum of its proper divisors (99478228).

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

87926780 is a wasteful number, since it uses less digits than its factorization.

87926780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65693 (or 65691 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 87926780 is about 9376.9280684028. The cubic root of 87926780 is about 444.6726203817.

The spelling of 87926780 in words is "eighty-seven million, nine hundred twenty-six thousand, seven hundred eighty".