28910412 has 48 divisors (see below), whose sum is σ = 76792800. Its totient is φ = 9400320.

The previous prime is 28910393. The next prime is 28910429. The reversal of 28910412 is 21401982.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1164 + ... + 7692.

It is an arithmetic number, because the mean of its divisors is an integer number (1599850).

Almost surely, 2^28910412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28910412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38396400).

28910412 is an abundant number, since it is smaller than the sum of its proper divisors (47882388).

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

28910412 is a wasteful number, since it uses less digits than its factorization.

28910412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6583 (or 6575 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 28910412 is about 5376.8403361082. The cubic root of 28910412 is about 306.9149852840.

It can be divided in two parts, 289 and 10412, that added together give a palindrome (10701).

The spelling of 28910412 in words is "twenty-eight million, nine hundred ten thousand, four hundred twelve".