28374918 has 32 divisors (see below), whose sum is σ = 66673152. Its totient is φ = 7936800.

The previous prime is 28374869. The next prime is 28374919. The reversal of 28374918 is 81947382.

It is a self number, because there is not a number n which added to its sum of digits gives 28374918.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28374919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15678 + ... + 17393.

It is an arithmetic number, because the mean of its divisors is an integer number (2083536).

Almost surely, 2^28374918 is an apocalyptic number.

28374918 is an abundant number, since it is smaller than the sum of its proper divisors (38298234).

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

28374918 is a wasteful number, since it uses less digits than its factorization.

28374918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33100.

The product of its digits is 96768, while the sum is 42.

The square root of 28374918 is about 5326.8112412587. The cubic root of 28374918 is about 305.0082162079.

It can be divided in two parts, 28374 and 918, that added together give a palindrome (29292).

The spelling of 28374918 in words is "twenty-eight million, three hundred seventy-four thousand, nine hundred eighteen".