28277137930 has 16 divisors (see below), whose sum is σ = 50900774400. Its totient is φ = 11310427152.

The previous prime is 28277137843. The next prime is 28277137949. The reversal of 28277137930 is 3973177282.

It is a happy 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, 446287 + ... + 505693.

It is an arithmetic number, because the mean of its divisors is an integer number (3181298400).

Almost surely, 2^28277137930 is an apocalyptic number.

28277137930 is a deficient number, since it is larger than the sum of its proper divisors (22623636470).

28277137930 is a wasteful number, since it uses less digits than its factorization.

28277137930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107013.

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 28277137930 in words is "twenty-eight billion, two hundred seventy-seven million, one hundred thirty-seven thousand, nine hundred thirty".