89742636 has 18 divisors (see below), whose sum is σ = 226849532. Its totient is φ = 29914200.

The previous prime is 89742607. The next prime is 89742659. The reversal of 89742636 is 63624798.

89742636 is a `hidden beast` number, since 8 + 9 + 7 + 4 + 2 + 636 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 89742591 and 89742600.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1246390 + ... + 1246461.

Almost surely, 2^89742636 is an apocalyptic number.

It is an amenable number.

89742636 is an abundant number, since it is smaller than the sum of its proper divisors (137106896).

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

89742636 is a wasteful number, since it uses less digits than its factorization.

89742636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492861 (or 2492856 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 89742636 is about 9473.2589957205. The cubic root of 89742636 is about 447.7128993311.

The spelling of 89742636 in words is "eighty-nine million, seven hundred forty-two thousand, six hundred thirty-six".