20606572 has 12 divisors (see below), whose sum is σ = 41213200. Its totient is φ = 8831376.

The previous prime is 20606563. The next prime is 20606627. The reversal of 20606572 is 27560602.

20606572 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 735949 = 20606572 / (2 + 0 + 6 + 0 + 6 + 5 + 7 + 2).

It is a self number, because there is not a number n which added to its sum of digits gives 20606572.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367947 + ... + 368002.

Almost surely, 2^20606572 is an apocalyptic number.

It is an amenable number.

20606572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20606572 is a wasteful number, since it uses less digits than its factorization.

20606572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 735960 (or 735958 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20606572 is about 4539.4462217323. The cubic root of 20606572 is about 274.1586273125.

The spelling of 20606572 in words is "twenty million, six hundred six thousand, five hundred seventy-two".