20552472 has 24 divisors (see below), whose sum is σ = 55663140. Its totient is φ = 6850800.

The previous prime is 20552449. The next prime is 20552479. The reversal of 20552472 is 27425502.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20552479) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142654 + ... + 142797.

Almost surely, 2^20552472 is an apocalyptic number.

It is an amenable number.

20552472 is an abundant number, since it is smaller than the sum of its proper divisors (35110668).

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

20552472 is a wasteful number, since it uses less digits than its factorization.

20552472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285463 (or 285456 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 20552472 is about 4533.4834288878. The cubic root of 20552472 is about 273.9184938808.

Adding to 20552472 its reverse (27425502), we get a palindrome (47977974).

The spelling of 20552472 in words is "twenty million, five hundred fifty-two thousand, four hundred seventy-two".