422757040 has 80 divisors (see below), whose sum is σ = 1002248352. Its totient is φ = 165814272.

The previous prime is 422757029. The next prime is 422757059. The reversal of 422757040 is 40757224.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 422756993 and 422757011.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1218147 + ... + 1218493.

Almost surely, 2^422757040 is an apocalyptic number.

422757040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422757040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501124176).

422757040 is an abundant number, since it is smaller than the sum of its proper divisors (579491312).

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

422757040 is a wasteful number, since it uses less digits than its factorization.

422757040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 608 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 422757040 is about 20561.0563930942. The cubic root of 422757040 is about 750.5223265193.

The spelling of 422757040 in words is "four hundred twenty-two million, seven hundred fifty-seven thousand, forty".