20265472 has 20 divisors (see below), whose sum is σ = 40492386. Its totient is φ = 10132480.

The previous prime is 20265467. The next prime is 20265473. The reversal of 20265472 is 27456202.

It can be written as a sum of positive squares in only one way, i.e., 15872256 + 4393216 = 3984^2 + 2096^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20265472.

It is not an unprimeable number, because it can be changed into a prime (20265473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19279 + ... + 20302.

Almost surely, 2^20265472 is an apocalyptic number.

It is an amenable number.

20265472 is a deficient number, since it is larger than the sum of its proper divisors (20226914).

20265472 is an frugal number, since it uses more digits than its factorization.

20265472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39599 (or 39583 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 20265472 is about 4501.7187828651. The cubic root of 20265472 is about 272.6374897460.

The spelling of 20265472 in words is "twenty million, two hundred sixty-five thousand, four hundred seventy-two".