20472582 has 16 divisors (see below), whose sum is σ = 44094960. Its totient is φ = 6299232.

The previous prime is 20472559. The next prime is 20472583. The reversal of 20472582 is 28527402.

It is a super-2 number, since 2×20472582² = 838253227493448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20472583) 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, 131157 + ... + 131312.

It is an arithmetic number, because the mean of its divisors is an integer number (2755935).

Almost surely, 2^20472582 is an apocalyptic number.

20472582 is an abundant number, since it is smaller than the sum of its proper divisors (23622378).

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

20472582 is a wasteful number, since it uses less digits than its factorization.

20472582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262487.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 20472582 is about 4524.6637444124. The cubic root of 20472582 is about 273.5631146626.

Adding to 20472582 its reverse (28527402), we get a palindrome (48999984).

The spelling of 20472582 in words is "twenty million, four hundred seventy-two thousand, five hundred eighty-two".