28961913124 has 9 divisors (see below), whose sum is σ = 50683943611. Its totient is φ = 14480786380.

The previous prime is 28961913089. The next prime is 28961913131. The reversal of 28961913124 is 42131916982.

The square root of 28961913124 is 170182.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 297819 + ... + 382909.

Almost surely, 2^28961913124 is an apocalyptic number.

28961913124 is the 170182-nd square number.

It is an amenable number.

28961913124 is a deficient number, since it is larger than the sum of its proper divisors (21722030487).

28961913124 is an frugal number, since it uses more digits than its factorization.

28961913124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170186 (or 85093 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The spelling of 28961913124 in words is "twenty-eight billion, nine hundred sixty-one million, nine hundred thirteen thousand, one hundred twenty-four".