422564406 has 32 divisors (see below), whose sum is σ = 931101696. Its totient is φ = 126780000.

The previous prime is 422564353. The next prime is 422564407. The reversal of 422564406 is 604465224.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422564407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25030 + ... + 38361.

It is an arithmetic number, because the mean of its divisors is an integer number (29096928).

Almost surely, 2^422564406 is an apocalyptic number.

422564406 is an abundant number, since it is smaller than the sum of its proper divisors (508537290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422564406 is a wasteful number, since it uses less digits than its factorization.

422564406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63508.

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 422564406 is about 20556.3714210461. The cubic root of 422564406 is about 750.4083145542.

The spelling of 422564406 in words is "four hundred twenty-two million, five hundred sixty-four thousand, four hundred six".