422640357 has 8 divisors (see below), whose sum is σ = 563781120. Its totient is φ = 281629920.

The previous prime is 422640353. The next prime is 422640371. The reversal of 422640357 is 753046224.

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

It is not a de Polignac number, because 422640357 - 2² = 422640353 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422640353) 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, 24744 + ... + 38177.

It is an arithmetic number, because the mean of its divisors is an integer number (70472640).

Almost surely, 2^422640357 is an apocalyptic number.

It is an amenable number.

422640357 is a deficient number, since it is larger than the sum of its proper divisors (141140763).

422640357 is a wasteful number, since it uses less digits than its factorization.

422640357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65163.

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 422640357 is about 20558.2187214749. The cubic root of 422640357 is about 750.4532708944.

The spelling of 422640357 in words is "four hundred twenty-two million, six hundred forty thousand, three hundred fifty-seven".