28764038914 has 16 divisors (see below), whose sum is σ = 46468050552. Its totient is φ = 13274834688.

The previous prime is 28764038887. The next prime is 28764038951. The reversal of 28764038914 is 41983046782.

It can be written as a sum of positive squares in 4 ways, for example, as 7571958289 + 21192080625 = 87017^2 + 145575^2 .

It is a super-2 number, since 2×28764038914² (a number of 22 digits) contains 22 as substring.

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, 533082 + ... + 584554.

Almost surely, 2^28764038914 is an apocalyptic number.

28764038914 is a deficient number, since it is larger than the sum of its proper divisors (17704011638).

28764038914 is a wasteful number, since it uses less digits than its factorization.

28764038914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72981.

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 28764038914 in words is "twenty-eight billion, seven hundred sixty-four million, thirty-eight thousand, nine hundred fourteen".