422207478 has 240 divisors, whose sum is σ = 1265296032. Its totient is φ = 102643200.

The previous prime is 422207473. The next prime is 422207501. The reversal of 422207478 is 874702224.

It is a super-3 number, since 3×422207478³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422207473) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 2332548 + ... + 2332728.

Almost surely, 2^422207478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422207478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (632648016).

422207478 is an abundant number, since it is smaller than the sum of its proper divisors (843088554).

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

422207478 is a wasteful number, since it uses less digits than its factorization.

422207478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 422207478 is about 20547.6878991287. The cubic root of 422207478 is about 750.1969722647.

The spelling of 422207478 in words is "four hundred twenty-two million, two hundred seven thousand, four hundred seventy-eight".