20756974 has 16 divisors (see below), whose sum is σ = 35721216. Its totient is φ = 8861400.

The previous prime is 20756969. The next prime is 20756977. The reversal of 20756974 is 47965702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20756977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1059 + ... + 6529.

It is an arithmetic number, because the mean of its divisors is an integer number (2232576).

Almost surely, 2^20756974 is an apocalyptic number.

20756974 is a deficient number, since it is larger than the sum of its proper divisors (14964242).

20756974 is a wasteful number, since it uses less digits than its factorization.

20756974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5751.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 20756974 is about 4555.9822212120. The cubic root of 20756974 is about 274.8240152272.

The spelling of 20756974 in words is "twenty million, seven hundred fifty-six thousand, nine hundred seventy-four".