20769120 has 72 divisors (see below), whose sum is σ = 70879536. Its totient is φ = 5538048.

The previous prime is 20769113. The next prime is 20769131. The reversal of 20769120 is 2196702.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5772 + ... + 8651.

It is an arithmetic number, because the mean of its divisors is an integer number (984438).

Almost surely, 2^20769120 is an apocalyptic number.

20769120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20769120 is an abundant number, since it is smaller than the sum of its proper divisors (50110416).

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

20769120 is a wasteful number, since it uses less digits than its factorization.

20769120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14444 (or 14433 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 20769120 is about 4557.3149989879. The cubic root of 20769120 is about 274.8776094492.

The spelling of 20769120 in words is "twenty million, seven hundred sixty-nine thousand, one hundred twenty".