28922502 has 16 divisors (see below), whose sum is σ = 66108672. Its totient is φ = 8263560.

The previous prime is 28922501. The next prime is 28922513. The reversal of 28922502 is 20522982.

It is a super-2 number, since 2×28922502² = 1673022243880008, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28922502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28922501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344274 + ... + 344357.

It is an arithmetic number, because the mean of its divisors is an integer number (4131792).

Almost surely, 2^28922502 is an apocalyptic number.

28922502 is an abundant number, since it is smaller than the sum of its proper divisors (37186170).

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

28922502 is a wasteful number, since it uses less digits than its factorization.

28922502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688643.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 28922502 is about 5377.9644848214. The cubic root of 28922502 is about 306.9577620876.

It can be divided in two parts, 289 and 22502, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 28922502 in words is "twenty-eight million, nine hundred twenty-two thousand, five hundred two".