22978949320 has 16 divisors (see below), whose sum is σ = 51702636060. Its totient is φ = 9191579712.

The previous prime is 22978949291. The next prime is 22978949321. The reversal of 22978949320 is 2394987922.

It can be written as a sum of positive squares in 2 ways, for example, as 20816141284 + 2162808036 = 144278^2 + 46506^2 .

It is a super-2 number, since 2×22978949320² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22978949321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287236827 + ... + 287236906.

Almost surely, 2^22978949320 is an apocalyptic number.

22978949320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22978949320 is an abundant number, since it is smaller than the sum of its proper divisors (28723686740).

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

22978949320 is a wasteful number, since it uses less digits than its factorization.

22978949320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574473744 (or 574473740 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 55.

The spelling of 22978949320 in words is "twenty-two billion, nine hundred seventy-eight million, nine hundred forty-nine thousand, three hundred twenty".