426664392 has 192 divisors, whose sum is σ = 1358515200. Its totient is φ = 109296000.

The previous prime is 426664391. The next prime is 426664417. The reversal of 426664392 is 293466624.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426664391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2825517 + ... + 2825667.

It is an arithmetic number, because the mean of its divisors is an integer number (7075600).

Almost surely, 2^426664392 is an apocalyptic number.

426664392 is a gapful number since it is divisible by the number (42) 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 426664392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (679257600).

426664392 is an abundant number, since it is smaller than the sum of its proper divisors (931850808).

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

426664392 is a wasteful number, since it uses less digits than its factorization.

426664392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328 (or 313 counting only the distinct ones).

The product of its digits is 373248, while the sum is 42.

The square root of 426664392 is about 20655.8561187863. The cubic root of 426664392 is about 752.8274852629.

The spelling of 426664392 in words is "four hundred twenty-six million, six hundred sixty-four thousand, three hundred ninety-two".