20764760 has 16 divisors (see below), whose sum is σ = 46720800. Its totient is φ = 8305888.

The previous prime is 20764759. The next prime is 20764763. The reversal of 20764760 is 6746702.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20764763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 259520 + ... + 259599.

It is an arithmetic number, because the mean of its divisors is an integer number (2920050).

Almost surely, 2^20764760 is an apocalyptic number.

20764760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20764760 is an abundant number, since it is smaller than the sum of its proper divisors (25956040).

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

20764760 is a wasteful number, since it uses less digits than its factorization.

20764760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519130 (or 519126 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 20764760 is about 4556.8366220438. The cubic root of 20764760 is about 274.8583733549.

The spelling of 20764760 in words is "twenty million, seven hundred sixty-four thousand, seven hundred sixty".