20046636 has 48 divisors (see below), whose sum is σ = 52214400. Its totient is φ = 6651216.

The previous prime is 20046619. The next prime is 20046659. The reversal of 20046636 is 63664002.

20046636 is a `hidden beast` number, since 20 + 0 + 4 + 6 + 636 = 666.

It is a super-2 number, since 2×20046636² = 803735229832992, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45031 + ... + 45473.

It is an arithmetic number, because the mean of its divisors is an integer number (1087800).

Almost surely, 2^20046636 is an apocalyptic number.

It is an amenable number.

20046636 is an abundant number, since it is smaller than the sum of its proper divisors (32167764).

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

20046636 is a wasteful number, since it uses less digits than its factorization.

20046636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875 (or 867 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 20046636 is about 4477.3469823099. The cubic root of 20046636 is about 271.6525805151.

The spelling of 20046636 in words is "twenty million, forty-six thousand, six hundred thirty-six".