28701912 has 32 divisors (see below), whose sum is σ = 72500400. Its totient is φ = 9467904.

The previous prime is 28701889. The next prime is 28701931. The reversal of 28701912 is 21910782.

It is a self number, because there is not a number n which added to its sum of digits gives 28701912.

It is a congruent 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, 3837 + ... + 8492.

Almost surely, 2^28701912 is an apocalyptic number.

It is an amenable number.

28701912 is an abundant number, since it is smaller than the sum of its proper divisors (43798488).

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

28701912 is a wasteful number, since it uses less digits than its factorization.

28701912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12435 (or 12431 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 28701912 is about 5357.4165415805. The cubic root of 28701912 is about 306.1753875155.

The spelling of 28701912 in words is "twenty-eight million, seven hundred one thousand, nine hundred twelve".