20764496 has 10 divisors (see below), whose sum is σ = 40231242. Its totient is φ = 10382240.

The previous prime is 20764487. The next prime is 20764507. The reversal of 20764496 is 69446702.

It can be written as a sum of positive squares in only one way, i.e., 18318400 + 2446096 = 4280^2 + 1564^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 648875 + ... + 648906.

Almost surely, 2^20764496 is an apocalyptic number.

It is an amenable number.

20764496 is a deficient number, since it is larger than the sum of its proper divisors (19466746).

20764496 is a wasteful number, since it uses less digits than its factorization.

20764496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297789 (or 1297783 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 20764496 is about 4556.8076544880. The cubic root of 20764496 is about 274.8572085142.

The spelling of 20764496 in words is "twenty million, seven hundred sixty-four thousand, four hundred ninety-six".