20495544 has 16 divisors (see below), whose sum is σ = 51238920. Its totient is φ = 6831840.

The previous prime is 20495539. The next prime is 20495567. The reversal of 20495544 is 44559402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426967 + ... + 427014.

Almost surely, 2^20495544 is an apocalyptic number.

20495544 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20495544 is an abundant number, since it is smaller than the sum of its proper divisors (30743376).

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

20495544 is a wasteful number, since it uses less digits than its factorization.

20495544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853990 (or 853986 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 20495544 is about 4527.2004594451. The cubic root of 20495544 is about 273.6653523651.

The spelling of 20495544 in words is "twenty million, four hundred ninety-five thousand, five hundred forty-four".