22245402 has 24 divisors (see below), whose sum is σ = 45059616. Its totient is φ = 7321264.

The previous prime is 22245397. The next prime is 22245413. The reversal of 22245402 is 20454222.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133123 + ... + 133289.

It is an arithmetic number, because the mean of its divisors is an integer number (1877484).

Almost surely, 2^22245402 is an apocalyptic number.

22245402 is an abundant number, since it is smaller than the sum of its proper divisors (22814214).

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

22245402 is a wasteful number, since it uses less digits than its factorization.

22245402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 22245402 is about 4716.5031538206. The cubic root of 22245402 is about 281.2419407073.

Adding to 22245402 its reverse (20454222), we get a palindrome (42699624).

It can be divided in two parts, 2224 and 5402, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 22245402 in words is "twenty-two million, two hundred forty-five thousand, four hundred two".