426374640 has 120 divisors (see below), whose sum is σ = 1435653648. Its totient is φ = 113402880.

The previous prime is 426374639. The next prime is 426374659. The reversal of 426374640 is 46473624.

426374640 is a `hidden beast` number, since 4 + 2 + 6 + 3 + 7 + 4 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 426374595 and 426374604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 497092 + ... + 497948.

Almost surely, 2^426374640 is an apocalyptic number.

426374640 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 426374640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (717826824).

426374640 is an abundant number, since it is smaller than the sum of its proper divisors (1009279008).

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

426374640 is a wasteful number, since it uses less digits than its factorization.

426374640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 36.

The square root of 426374640 is about 20648.8411297099. The cubic root of 426374640 is about 752.6570291456.

The spelling of 426374640 in words is "four hundred twenty-six million, three hundred seventy-four thousand, six hundred forty".