20764680 has 32 divisors (see below), whose sum is σ = 62294400. Its totient is φ = 5537216.

The previous prime is 20764673. The next prime is 20764703. The reversal of 20764680 is 8646702.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 86400 + ... + 86639.

It is an arithmetic number, because the mean of its divisors is an integer number (1946700).

Almost surely, 2^20764680 is an apocalyptic number.

20764680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20764680 is an abundant number, since it is smaller than the sum of its proper divisors (41529720).

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

20764680 is a wasteful number, since it uses less digits than its factorization.

20764680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173053 (or 173049 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 20764680 is about 4556.8278440161. The cubic root of 20764680 is about 274.8580203739.

The spelling of 20764680 in words is "twenty million, seven hundred sixty-four thousand, six hundred eighty".