20572604 has 12 divisors (see below), whose sum is σ = 38771544. Its totient is φ = 9495024.

The previous prime is 20572597. The next prime is 20572609. The reversal of 20572604 is 40627502.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20572609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197762 + ... + 197865.

It is an arithmetic number, because the mean of its divisors is an integer number (3230962).

Almost surely, 2^20572604 is an apocalyptic number.

It is an amenable number.

20572604 is a deficient number, since it is larger than the sum of its proper divisors (18198940).

20572604 is a wasteful number, since it uses less digits than its factorization.

20572604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395644 (or 395642 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 20572604 is about 4535.7032530799. The cubic root of 20572604 is about 274.0079028747.

The spelling of 20572604 in words is "twenty million, five hundred seventy-two thousand, six hundred four".