28849602920 has 32 divisors (see below), whose sum is σ = 65800813320. Its totient is φ = 11381760000.

The previous prime is 28849602919. The next prime is 28849602959. The reversal of 28849602920 is 2920694882.

It can be written as a sum of positive squares in 4 ways, for example, as 26426403844 + 2423199076 = 162562^2 + 49226^2 .

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, 4937081 + ... + 4942920.

Almost surely, 2^28849602920 is an apocalyptic number.

28849602920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28849602920 is an abundant number, since it is smaller than the sum of its proper divisors (36951210400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28849602920 is a wasteful number, since it uses less digits than its factorization.

28849602920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9880085 (or 9880081 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 28849602920 in words is "twenty-eight billion, eight hundred forty-nine million, six hundred two thousand, nine hundred twenty".