222792978 has 16 divisors (see below), whose sum is σ = 445929696. Its totient is φ = 74207040.

The previous prime is 222792967. The next prime is 222792979. The reversal of 222792978 is 879297222.

It is a super-2 number, since 2×222792978² = 99273422092216968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (222792979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5476 + ... + 21807.

It is an arithmetic number, because the mean of its divisors is an integer number (27870606).

Almost surely, 2^222792978 is an apocalyptic number.

222792978 is an abundant number, since it is smaller than the sum of its proper divisors (223136718).

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

222792978 is a wasteful number, since it uses less digits than its factorization.

222792978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28649.

The product of its digits is 508032, while the sum is 48.

The square root of 222792978 is about 14926.2513043296. The cubic root of 222792978 is about 606.2249869866.

The spelling of 222792978 in words is "two hundred twenty-two million, seven hundred ninety-two thousand, nine hundred seventy-eight".