20472630 has 16 divisors (see below), whose sum is σ = 49134384. Its totient is φ = 5459360.

The previous prime is 20472629. The next prime is 20472659. The reversal of 20472630 is 3627402.

It is a self number, because there is not a number n which added to its sum of digits gives 20472630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341181 + ... + 341240.

It is an arithmetic number, because the mean of its divisors is an integer number (3070899).

Almost surely, 2^20472630 is an apocalyptic number.

20472630 is an abundant number, since it is smaller than the sum of its proper divisors (28661754).

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

20472630 is a wasteful number, since it uses less digits than its factorization.

20472630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682431.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20472630 is about 4524.6690486709. The cubic root of 20472630 is about 273.5633284611.

The spelling of 20472630 in words is "twenty million, four hundred seventy-two thousand, six hundred thirty".