87147792 has 40 divisors (see below), whose sum is σ = 250147680. Its totient is φ = 29049120.

The previous prime is 87147791. The next prime is 87147793. The reversal of 87147792 is 29774178.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87147791) and next prime (87147793).

It is not an unprimeable number, because it can be changed into a prime (87147791) 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, 100434 + ... + 101297.

It is an arithmetic number, because the mean of its divisors is an integer number (6253692).

Almost surely, 2^87147792 is an apocalyptic number.

It is an amenable number.

87147792 is an abundant number, since it is smaller than the sum of its proper divisors (162999888).

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

87147792 is a wasteful number, since it uses less digits than its factorization.

87147792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201748 (or 201736 counting only the distinct ones).

The product of its digits is 197568, while the sum is 45.

The square root of 87147792 is about 9335.2981741346. The cubic root of 87147792 is about 443.3555295700.

The spelling of 87147792 in words is "eighty-seven million, one hundred forty-seven thousand, seven hundred ninety-two".