22278002 has 8 divisors (see below), whose sum is σ = 33538476. Its totient is φ = 11098512.

The previous prime is 22277989. The next prime is 22278017. The reversal of 22278002 is 20087222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21335161 + 942841 = 4619^2 + 971^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×22278002² = 992618746224008, which contains 22 as substring.

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, 19553 + ... + 20660.

Almost surely, 2^22278002 is an apocalyptic number.

22278002 is a deficient number, since it is larger than the sum of its proper divisors (11260474).

22278002 is a wasteful number, since it uses less digits than its factorization.

22278002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40492.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 22278002 is about 4719.9578387947. The cubic root of 22278002 is about 281.3792576563.

The spelling of 22278002 in words is "twenty-two million, two hundred seventy-eight thousand, two".