20746692 has 30 divisors (see below), whose sum is σ = 54236798. Its totient is φ = 6915456.

The previous prime is 20746639. The next prime is 20746709. The reversal of 20746692 is 29664702.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20575296 + 171396 = 4536^2 + 414^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31693 + ... + 32340.

Almost surely, 2^20746692 is an apocalyptic number.

It is an amenable number.

20746692 is an abundant number, since it is smaller than the sum of its proper divisors (33490106).

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

20746692 is a wasteful number, since it uses less digits than its factorization.

20746692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64049 (or 64038 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 20746692 is about 4554.8536749274. The cubic root of 20746692 is about 274.7786295618.

The spelling of 20746692 in words is "twenty million, seven hundred forty-six thousand, six hundred ninety-two".