108213428 has 12 divisors (see below), whose sum is σ = 189488292. Its totient is φ = 54073920.

The previous prime is 108213401. The next prime is 108213463. The reversal of 108213428 is 824312801.

It can be written as a sum of positive squares in 2 ways, for example, as 7772944 + 100440484 = 2788^2 + 10022^2 .

It is a super-2 number, since 2×108213428² = 23420291999022368, 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 108213428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176 + ... + 14712.

It is an arithmetic number, because the mean of its divisors is an integer number (15790691).

Almost surely, 2^108213428 is an apocalyptic number.

It is an amenable number.

108213428 is a deficient number, since it is larger than the sum of its proper divisors (81274864).

108213428 is a wasteful number, since it uses less digits than its factorization.

108213428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16402 (or 16400 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 108213428 is about 10402.5683367138. The cubic root of 108213428 is about 476.5338090182.

The spelling of 108213428 in words is "one hundred eight million, two hundred thirteen thousand, four hundred twenty-eight".