87072340 has 24 divisors (see below), whose sum is σ = 183046752. Its totient is φ = 34791840.

The previous prime is 87072331. The next prime is 87072347. The reversal of 87072340 is 4327078.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87072347) 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, 24475 + ... + 27805.

It is an arithmetic number, because the mean of its divisors is an integer number (7626948).

Almost surely, 2^87072340 is an apocalyptic number.

It is an amenable number.

87072340 is an abundant number, since it is smaller than the sum of its proper divisors (95974412).

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

87072340 is a wasteful number, since it uses less digits than its factorization.

87072340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4647 (or 4645 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 87072340 is about 9331.2560783637. The cubic root of 87072340 is about 443.2275411667.

The spelling of 87072340 in words is "eighty-seven million, seventy-two thousand, three hundred forty".