722428791 has 16 divisors (see below), whose sum is σ = 1102965504. Its totient is φ = 412020864.

The previous prime is 722428769. The next prime is 722428823. The reversal of 722428791 is 197824227.

It is not a de Polignac number, because 722428791 - 2¹⁴ = 722412407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722426791) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21906 + ... + 43871.

It is an arithmetic number, because the mean of its divisors is an integer number (68935344).

Almost surely, 2^722428791 is an apocalyptic number.

722428791 is a deficient number, since it is larger than the sum of its proper divisors (380536713).

722428791 is a wasteful number, since it uses less digits than its factorization.

722428791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66310.

The product of its digits is 112896, while the sum is 42.

The square root of 722428791 is about 26878.0354750863. The cubic root of 722428791 is about 897.2876326029.

The spelling of 722428791 in words is "seven hundred twenty-two million, four hundred twenty-eight thousand, seven hundred ninety-one".