22350978 has 40 divisors (see below), whose sum is σ = 53940348. Its totient is φ = 6876576.

The previous prime is 22350961. The next prime is 22350983. The reversal of 22350978 is 87905322.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21650409 + 700569 = 4653^2 + 837^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3201 + ... + 7412.

Almost surely, 2^22350978 is an apocalyptic number.

22350978 is an abundant number, since it is smaller than the sum of its proper divisors (31589370).

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

22350978 is a wasteful number, since it uses less digits than its factorization.

22350978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10640 (or 10631 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 22350978 is about 4727.6820959113. The cubic root of 22350978 is about 281.6861605888.

The spelling of 22350978 in words is "twenty-two million, three hundred fifty thousand, nine hundred seventy-eight".