722366438 has 4 divisors (see below), whose sum is σ = 1083549660. Its totient is φ = 361183218.

The previous prime is 722366389. The next prime is 722366461. The reversal of 722366438 is 834663227.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 722366395 and 722366404.

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, 180591608 + ... + 180591611.

It is an arithmetic number, because the mean of its divisors is an integer number (270887415).

Almost surely, 2^722366438 is an apocalyptic number.

722366438 is a deficient number, since it is larger than the sum of its proper divisors (361183222).

722366438 is a wasteful number, since it uses less digits than its factorization.

722366438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361183221.

The product of its digits is 290304, while the sum is 41.

The square root of 722366438 is about 26876.8755252540. The cubic root of 722366438 is about 897.2618168242.

The spelling of 722366438 in words is "seven hundred twenty-two million, three hundred sixty-six thousand, four hundred thirty-eight".