20472460 has 24 divisors (see below), whose sum is σ = 43102080. Its totient is φ = 8168064.

The previous prime is 20472421. The next prime is 20472467. The reversal of 20472460 is 6427402.

It is not an unprimeable number, because it can be changed into a prime (20472467) 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, 8512 + ... + 10648.

It is an arithmetic number, because the mean of its divisors is an integer number (1795920).

Almost surely, 2^20472460 is an apocalyptic number.

20472460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20472460 is an abundant number, since it is smaller than the sum of its proper divisors (22629620).

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

20472460 is a wasteful number, since it uses less digits than its factorization.

20472460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2625 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 20472460 is about 4524.6502627275. The cubic root of 20472460 is about 273.5625712567.

Adding to 20472460 its reverse (6427402), we get a palindrome (26899862).

The spelling of 20472460 in words is "twenty million, four hundred seventy-two thousand, four hundred sixty".