20200000764 has 12 divisors (see below), whose sum is σ = 47133335144. Its totient is φ = 6733333584.

The previous prime is 20200000759. The next prime is 20200000771. The reversal of 20200000764 is 46700000202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 20200000764.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841666687 + ... + 841666710.

Almost surely, 2^20200000764 is an apocalyptic number.

It is an amenable number.

20200000764 is an abundant number, since it is smaller than the sum of its proper divisors (26933334380).

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

20200000764 is a wasteful number, since it uses less digits than its factorization.

20200000764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683333404 (or 1683333402 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

Adding to 20200000764 its reverse (46700000202), we get a palindrome (66900000966).

The spelling of 20200000764 in words is "twenty billion, two hundred million, seven hundred sixty-four", and thus it is an aban number.