28979412 has 96 divisors (see below), whose sum is σ = 85585920. Its totient is φ = 7413120.

The previous prime is 28979411. The next prime is 28979413. The reversal of 28979412 is 21497982.

It is an interprime number because it is at equal distance from previous prime (28979411) and next prime (28979413).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28979411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72798 + ... + 73194.

It is an arithmetic number, because the mean of its divisors is an integer number (891520).

Almost surely, 2^28979412 is an apocalyptic number.

28979412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28979412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42792960).

28979412 is an abundant number, since it is smaller than the sum of its proper divisors (56606508).

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

28979412 is a wasteful number, since it uses less digits than its factorization.

28979412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 499 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 28979412 is about 5383.2529199360. The cubic root of 28979412 is about 307.1589609213.

28979412 divided by its sum of digits (42) gives a palindrome (689986).

The spelling of 28979412 in words is "twenty-eight million, nine hundred seventy-nine thousand, four hundred twelve".