28951392 has 24 divisors (see below), whose sum is σ = 75997656. Its totient is φ = 9650432.

The previous prime is 28951361. The next prime is 28951397. The reversal of 28951392 is 29315982.

It is a tau number, because it is divible by the number of its divisors (24).

It is a self number, because there is not a number n which added to its sum of digits gives 28951392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28951397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150693 + ... + 150884.

It is an arithmetic number, because the mean of its divisors is an integer number (3166569).

Almost surely, 2^28951392 is an apocalyptic number.

It is an amenable number.

28951392 is an abundant number, since it is smaller than the sum of its proper divisors (47046264).

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

28951392 is a wasteful number, since it uses less digits than its factorization.

28951392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301590 (or 301582 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 28951392 is about 5380.6497748878. The cubic root of 28951392 is about 307.0599323482.

It can be divided in two parts, 289 and 51392, that added together give a triangular number (51681 = T₃₂₁).

The spelling of 28951392 in words is "twenty-eight million, nine hundred fifty-one thousand, three hundred ninety-two".