20065572 has 18 divisors (see below), whose sum is σ = 50721398. Its totient is φ = 6688512.

The previous prime is 20065553. The next prime is 20065597. The reversal of 20065572 is 27556002.

20065572 is a `hidden beast` number, since 2 + 0 + 0 + 655 + 7 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14561856 + 5503716 = 3816^2 + 2346^2 .

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

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, 278653 + ... + 278724.

Almost surely, 2^20065572 is an apocalyptic number.

It is an amenable number.

20065572 is an abundant number, since it is smaller than the sum of its proper divisors (30655826).

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

20065572 is a wasteful number, since it uses less digits than its factorization.

20065572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557387 (or 557382 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 20065572 is about 4479.4611283055. The cubic root of 20065572 is about 271.7380877035.

The spelling of 20065572 in words is "twenty million, sixty-five thousand, five hundred seventy-two".