222972438 has 16 divisors (see below), whose sum is σ = 480248496. Its totient is φ = 68606880.

The previous prime is 222972433. The next prime is 222972439. The reversal of 222972438 is 834279222.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 222972396 and 222972405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222972433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1429233 + ... + 1429388.

It is an arithmetic number, because the mean of its divisors is an integer number (30015531).

Almost surely, 2^222972438 is an apocalyptic number.

222972438 is an abundant number, since it is smaller than the sum of its proper divisors (257276058).

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

222972438 is a wasteful number, since it uses less digits than its factorization.

222972438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858639.

The product of its digits is 96768, while the sum is 39.

The square root of 222972438 is about 14932.2616505337. The cubic root of 222972438 is about 606.3877149433.

The spelling of 222972438 in words is "two hundred twenty-two million, nine hundred seventy-two thousand, four hundred thirty-eight".