87290628 has 24 divisors (see below), whose sum is σ = 203956032. Its totient is φ = 29057184.

The previous prime is 87290627. The next prime is 87290641. The reversal of 87290628 is 82609278.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 87290628.

It is not an unprimeable number, because it can be changed into a prime (87290627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5001 + ... + 14127.

It is an arithmetic number, because the mean of its divisors is an integer number (8498168).

Almost surely, 2^87290628 is an apocalyptic number.

It is an amenable number.

87290628 is an abundant number, since it is smaller than the sum of its proper divisors (116665404).

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

87290628 is a wasteful number, since it uses less digits than its factorization.

87290628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9931 (or 9929 counting only the distinct ones).

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

The square root of 87290628 is about 9342.9453600029. The cubic root of 87290628 is about 443.5976185644.

The spelling of 87290628 in words is "eighty-seven million, two hundred ninety thousand, six hundred twenty-eight".