28501912 has 16 divisors (see below), whose sum is σ = 53802000. Its totient is φ = 14154720.

The previous prime is 28501909. The next prime is 28501933. The reversal of 28501912 is 21910582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10764 + ... + 13147.

It is an arithmetic number, because the mean of its divisors is an integer number (3362625).

Almost surely, 2^28501912 is an apocalyptic number.

It is an amenable number.

28501912 is a deficient number, since it is larger than the sum of its proper divisors (25300088).

28501912 is a wasteful number, since it uses less digits than its factorization.

28501912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24066 (or 24062 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 28501912 is about 5338.7181982195. The cubic root of 28501912 is about 305.4625678380.

The spelling of 28501912 in words is "twenty-eight million, five hundred one thousand, nine hundred twelve".