20573672 has 32 divisors (see below), whose sum is σ = 46681920. Its totient is φ = 8298240.

The previous prime is 20573671. The next prime is 20573687. The reversal of 20573672 is 27637502.

It is a happy number.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20573671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9854 + ... + 11757.

It is an arithmetic number, because the mean of its divisors is an integer number (1458810).

Almost surely, 2^20573672 is an apocalyptic number.

It is an amenable number.

20573672 is an abundant number, since it is smaller than the sum of its proper divisors (26108248).

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

20573672 is a wasteful number, since it uses less digits than its factorization.

20573672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21641 (or 21637 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 32.

The square root of 20573672 is about 4535.8209841218. The cubic root of 20573672 is about 274.0126443807.

The spelling of 20573672 in words is "twenty million, five hundred seventy-three thousand, six hundred seventy-two".