20740732794 has 12 divisors (see below), whose sum is σ = 44938254426. Its totient is φ = 6913577592.

The previous prime is 20740732783. The next prime is 20740732829. The reversal of 20740732794 is 49723704702.

20740732794 is a `hidden beast` number, since 207 + 407 + 32 + 7 + 9 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11807647569 + 8933085225 = 108663^2 + 94515^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 576131449 + ... + 576131484.

Almost surely, 2^20740732794 is an apocalyptic number.

20740732794 is an abundant number, since it is smaller than the sum of its proper divisors (24197521632).

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

20740732794 is a wasteful number, since it uses less digits than its factorization.

20740732794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152262941 (or 1152262938 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 45.

The spelling of 20740732794 in words is "twenty billion, seven hundred forty million, seven hundred thirty-two thousand, seven hundred ninety-four".