20725476 has 24 divisors (see below), whose sum is σ = 49667520. Its totient is φ = 6721632.

The previous prime is 20725469. The next prime is 20725477. The reversal of 20725476 is 67452702.

It is not an unprimeable number, because it can be changed into a prime (20725477) 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, 22896 + ... + 23783.

It is an arithmetic number, because the mean of its divisors is an integer number (2069480).

Almost surely, 2^20725476 is an apocalyptic number.

It is an amenable number.

20725476 is an abundant number, since it is smaller than the sum of its proper divisors (28942044).

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

20725476 is a wasteful number, since it uses less digits than its factorization.

20725476 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46723 (or 46721 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 20725476 is about 4552.5241350266. The cubic root of 20725476 is about 274.6849328297.

The spelling of 20725476 in words is "twenty million, seven hundred twenty-five thousand, four hundred seventy-six".