222400826 has 32 divisors (see below), whose sum is σ = 356918400. Its totient is φ = 103754560.

The previous prime is 222400819. The next prime is 222400847. The reversal of 222400826 is 628004222.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222400795 and 222400804.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 217745 + ... + 218763.

It is an arithmetic number, because the mean of its divisors is an integer number (11153700).

Almost surely, 2^222400826 is an apocalyptic number.

222400826 is a deficient number, since it is larger than the sum of its proper divisors (134517574).

222400826 is a wasteful number, since it uses less digits than its factorization.

222400826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1174.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 222400826 is about 14913.1091996270. The cubic root of 222400826 is about 605.8690931244.

The spelling of 222400826 in words is "two hundred twenty-two million, four hundred thousand, eight hundred twenty-six".