722540294 has 16 divisors (see below), whose sum is σ = 1268852256. Its totient is φ = 302107200.

The previous prime is 722540279. The next prime is 722540297. The reversal of 722540294 is 492045227.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722540297) 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, 628817 + ... + 629964.

It is an arithmetic number, because the mean of its divisors is an integer number (79303266).

Almost surely, 2^722540294 is an apocalyptic number.

722540294 is a deficient number, since it is larger than the sum of its proper divisors (546311962).

722540294 is a wasteful number, since it uses less digits than its factorization.

722540294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258831.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 722540294 is about 26880.1096351931. The cubic root of 722540294 is about 897.3337940688. Note that the first 3 decimals are identical.

The spelling of 722540294 in words is "seven hundred twenty-two million, five hundred forty thousand, two hundred ninety-four".