22108402 has 4 divisors (see below), whose sum is σ = 33162606. Its totient is φ = 11054200.

The previous prime is 22108399. The next prime is 22108417. The reversal of 22108402 is 20480122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15752961 + 6355441 = 3969^2 + 2521^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22108402.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5527099 + ... + 5527102.

Almost surely, 2^22108402 is an apocalyptic number.

22108402 is a deficient number, since it is larger than the sum of its proper divisors (11054204).

22108402 is a wasteful number, since it uses less digits than its factorization.

22108402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11054203.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 22108402 is about 4701.9572520388. The cubic root of 22108402 is about 280.6634014574.

Adding to 22108402 its reverse (20480122), we get a palindrome (42588524).

The spelling of 22108402 in words is "twenty-two million, one hundred eight thousand, four hundred two".