722388334 has 4 divisors (see below), whose sum is σ = 1083582504. Its totient is φ = 361194166.

The previous prime is 722388311. The next prime is 722388343. The reversal of 722388334 is 433883227.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 433883227 = 59 ⋅7353953.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180597082 + ... + 180597085.

It is an arithmetic number, because the mean of its divisors is an integer number (270895626).

Almost surely, 2^722388334 is an apocalyptic number.

722388334 is a deficient number, since it is larger than the sum of its proper divisors (361194170).

722388334 is a wasteful number, since it uses less digits than its factorization.

722388334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361194169.

The product of its digits is 193536, while the sum is 40.

The square root of 722388334 is about 26877.2828611822. The cubic root of 722388334 is about 897.2708825122.

The spelling of 722388334 in words is "seven hundred twenty-two million, three hundred eighty-eight thousand, three hundred thirty-four".