28920422937 has 48 divisors (see below), whose sum is σ = 47815065600. Its totient is φ = 15457871520.

The previous prime is 28920422903. The next prime is 28920422941. The reversal of 28920422937 is 73922402982.

It is not a de Polignac number, because 28920422937 - 2⁸ = 28920422681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28920422537) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 155112 + ... + 286182.

It is an arithmetic number, because the mean of its divisors is an integer number (996147200).

Almost surely, 2^28920422937 is an apocalyptic number.

It is an amenable number.

28920422937 is a deficient number, since it is larger than the sum of its proper divisors (18894642663).

28920422937 is a wasteful number, since it uses less digits than its factorization.

28920422937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131186 (or 131179 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 48.

The spelling of 28920422937 in words is "twenty-eight billion, nine hundred twenty million, four hundred twenty-two thousand, nine hundred thirty-seven".