28915197910 has 16 divisors (see below), whose sum is σ = 53842093200. Its totient is φ = 11167248736.

The previous prime is 28915197907. The next prime is 28915197911. The reversal of 28915197910 is 1979151982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28915197911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49853500 + ... + 49854079.

It is an arithmetic number, because the mean of its divisors is an integer number (3365130825).

Almost surely, 2^28915197910 is an apocalyptic number.

28915197910 is a deficient number, since it is larger than the sum of its proper divisors (24926895290).

28915197910 is a wasteful number, since it uses less digits than its factorization.

28915197910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99707615.

The product of its (nonzero) digits is 408240, while the sum is 52.

The spelling of 28915197910 in words is "twenty-eight billion, nine hundred fifteen million, one hundred ninety-seven thousand, nine hundred ten".