20655492 has 48 divisors (see below), whose sum is σ = 56626752. Its totient is φ = 5777280.

The previous prime is 20655473. The next prime is 20655529. The reversal of 20655492 is 29455602.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4303 + ... + 7734.

It is an arithmetic number, because the mean of its divisors is an integer number (1179724).

Almost surely, 2^20655492 is an apocalyptic number.

20655492 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20655492 is an abundant number, since it is smaller than the sum of its proper divisors (35971260).

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

20655492 is a wasteful number, since it uses less digits than its factorization.

20655492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12068 (or 12066 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 20655492 is about 4544.8313500063. The cubic root of 20655492 is about 274.3754067100.

It can be divided in two parts, 2065 and 5492, that added together give a palindrome (7557).

The spelling of 20655492 in words is "twenty million, six hundred fifty-five thousand, four hundred ninety-two".