28977748190 has 16 divisors (see below), whose sum is σ = 52200624528. Its totient is φ = 11582059776.

The previous prime is 28977748109. The next prime is 28977748207. The reversal of 28977748190 is 9184777982.

It is a super-2 number, since 2×28977748190² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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, 1116467 + ... + 1142126.

It is an arithmetic number, because the mean of its divisors is an integer number (3262539033).

Almost surely, 2^28977748190 is an apocalyptic number.

28977748190 is a deficient number, since it is larger than the sum of its proper divisors (23222876338).

28977748190 is a wasteful number, since it uses less digits than its factorization.

28977748190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259883.

The product of its (nonzero) digits is 14224896, while the sum is 62.

The spelling of 28977748190 in words is "twenty-eight billion, nine hundred seventy-seven million, seven hundred forty-eight thousand, one hundred ninety".