426371440 has 80 divisors (see below), whose sum is σ = 1084546656. Its totient is φ = 154598400.

The previous prime is 426371431. The next prime is 426371483. The reversal of 426371440 is 44173624.

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

It is a congruent number.

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, 581314 + ... + 582046.

Almost surely, 2^426371440 is an apocalyptic number.

426371440 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 426371440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (542273328).

426371440 is an abundant number, since it is smaller than the sum of its proper divisors (658175216).

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

426371440 is a wasteful number, since it uses less digits than its factorization.

426371440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 426371440 is about 20648.7636433758. The cubic root of 426371440 is about 752.6551462095.

The spelling of 426371440 in words is "four hundred twenty-six million, three hundred seventy-one thousand, four hundred forty".