20757012 has 24 divisors (see below), whose sum is σ = 48624576. Its totient is φ = 6891648.

The previous prime is 20757001. The next prime is 20757031. The reversal of 20757012 is 21075702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133 + ... + 6444.

It is an arithmetic number, because the mean of its divisors is an integer number (2026024).

Almost surely, 2^20757012 is an apocalyptic number.

It is an amenable number.

20757012 is an abundant number, since it is smaller than the sum of its proper divisors (27867564).

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

20757012 is a wasteful number, since it uses less digits than its factorization.

20757012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6847 (or 6845 counting only the distinct ones).

The product of its (nonzero) digits is 980, while the sum is 24.

The square root of 20757012 is about 4555.9863915512. The cubic root of 20757012 is about 274.8241829348.

It can be divided in two parts, 2075701 and 2, that added together give a triangular number (2075703 = T₂₀₃₇).

The spelling of 20757012 in words is "twenty million, seven hundred fifty-seven thousand, twelve".