20485472 has 24 divisors (see below), whose sum is σ = 46092816. Its totient is φ = 8779392.

The previous prime is 20485469. The next prime is 20485483. The reversal of 20485472 is 27458402.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45503 + ... + 45950.

It is an arithmetic number, because the mean of its divisors is an integer number (1920534).

Almost surely, 2^20485472 is an apocalyptic number.

It is an amenable number.

20485472 is an abundant number, since it is smaller than the sum of its proper divisors (25607344).

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

20485472 is an equidigital number, since it uses as much as digits as its factorization.

It is an anagram of its base 9 representation: 20485472 = (42482705)₉.

20485472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91470 (or 91462 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 20485472 is about 4526.0879355134. The cubic root of 20485472 is about 273.6205164556.

The spelling of 20485472 in words is "twenty million, four hundred eighty-five thousand, four hundred seventy-two".