88521642 has 24 divisors (see below), whose sum is σ = 209233440. Its totient is φ = 26824680.

The previous prime is 88521637. The next prime is 88521661. The reversal of 88521642 is 24612588.

88521642 is a `hidden beast` number, since 8 + 8 + 5 + 2 + 1 + 642 = 666.

It is a super-2 number, since 2×88521642² = 15672162204752328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 88521597 and 88521606.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223342 + ... + 223737.

It is an arithmetic number, because the mean of its divisors is an integer number (8718060).

Almost surely, 2^88521642 is an apocalyptic number.

88521642 is an abundant number, since it is smaller than the sum of its proper divisors (120711798).

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

88521642 is a wasteful number, since it uses less digits than its factorization.

88521642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447098 (or 447095 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 88521642 is about 9408.5940501225. The cubic root of 88521642 is about 445.6731670824.

The spelling of 88521642 in words is "eighty-eight million, five hundred twenty-one thousand, six hundred forty-two".