422648731 has 8 divisors (see below), whose sum is σ = 425772864. Its totient is φ = 419531400.

The previous prime is 422648717. The next prime is 422648753. The reversal of 422648731 is 137846224.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422648731 is a prime.

It is a super-2 number, since 2×422648731² = 357263899631820722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422648701) 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, 235620 + ... + 237406.

It is an arithmetic number, because the mean of its divisors is an integer number (53221608).

Almost surely, 2^422648731 is an apocalyptic number.

422648731 is a deficient number, since it is larger than the sum of its proper divisors (3124133).

422648731 is a wasteful number, since it uses less digits than its factorization.

422648731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3401.

The product of its digits is 64512, while the sum is 37.

The square root of 422648731 is about 20558.4223859712. The cubic root of 422648731 is about 750.4582272393.

The spelling of 422648731 in words is "four hundred twenty-two million, six hundred forty-eight thousand, seven hundred thirty-one".