20535744 has 28 divisors (see below), whose sum is σ = 54334664. Its totient is φ = 6845184.

The previous prime is 20535737. The next prime is 20535791. The reversal of 20535744 is 44753502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53287 + ... + 53670.

Almost surely, 2^20535744 is an apocalyptic number.

20535744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20535744 is an abundant number, since it is smaller than the sum of its proper divisors (33798920).

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

20535744 is a wasteful number, since it uses less digits than its factorization.

20535744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106972 (or 106962 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 20535744 is about 4531.6381144129. The cubic root of 20535744 is about 273.8441580981.

The spelling of 20535744 in words is "twenty million, five hundred thirty-five thousand, seven hundred forty-four".