722740402 has 4 divisors (see below), whose sum is σ = 1084110606. Its totient is φ = 361370200.

The previous prime is 722740393. The next prime is 722740409. The reversal of 722740402 is 204047227.

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

It can be written as a sum of positive squares in only one way, i.e., 713370681 + 9369721 = 26709^2 + 3061^2 .

It is not an unprimeable number, because it can be changed into a prime (722740409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180685099 + ... + 180685102.

Almost surely, 2^722740402 is an apocalyptic number.

722740402 is a deficient number, since it is larger than the sum of its proper divisors (361370204).

722740402 is a wasteful number, since it uses less digits than its factorization.

722740402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361370203.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 722740402 is about 26883.8316093521. The cubic root of 722740402 is about 897.4166254800.

Adding to 722740402 its reverse (204047227), we get a palindrome (926787629).

The spelling of 722740402 in words is "seven hundred twenty-two million, seven hundred forty thousand, four hundred two".