722147402 has 16 divisors (see below), whose sum is σ = 1158928800. Its totient is φ = 336461040.

The previous prime is 722147401. The next prime is 722147407. The reversal of 722147402 is 204741227.

It is not an unprimeable number, because it can be changed into a prime (722147401) 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, 153452 + ... + 158087.

It is an arithmetic number, because the mean of its divisors is an integer number (72433050).

Almost surely, 2^722147402 is an apocalyptic number.

722147402 is a deficient number, since it is larger than the sum of its proper divisors (436781398).

722147402 is a wasteful number, since it uses less digits than its factorization.

722147402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311621.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 722147402 is about 26872.8004123128. The cubic root of 722147402 is about 897.1711183935.

Adding to 722147402 its reverse (204741227), we get a palindrome (926888629).

The spelling of 722147402 in words is "seven hundred twenty-two million, one hundred forty-seven thousand, four hundred two".