20746984 has 32 divisors (see below), whose sum is σ = 40803840. Its totient is φ = 9878400.

The previous prime is 20746963. The next prime is 20747011. The reversal of 20746984 is 48964702.

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, 13369 + ... + 14839.

It is an arithmetic number, because the mean of its divisors is an integer number (1275120).

Almost surely, 2^20746984 is an apocalyptic number.

It is an amenable number.

20746984 is a deficient number, since it is larger than the sum of its proper divisors (20056856).

20746984 is a wasteful number, since it uses less digits than its factorization.

20746984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561 (or 1557 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 20746984 is about 4554.8857285337. The cubic root of 20746984 is about 274.7799186827.

It can be divided in two parts, 2074698 and 4, that added together give a palindrome (2074702).

The spelling of 20746984 in words is "twenty million, seven hundred forty-six thousand, nine hundred eighty-four".