426641520 has 160 divisors (see below), whose sum is σ = 1427533632. Its totient is φ = 105005056.

The previous prime is 426641519. The next prime is 426641539. The reversal of 426641520 is 25146624.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215254 + ... + 217226.

Almost surely, 2^426641520 is an apocalyptic number.

426641520 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 426641520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (713766816).

426641520 is an abundant number, since it is smaller than the sum of its proper divisors (1000892112).

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

426641520 is a wasteful number, since it uses less digits than its factorization.

426641520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059 (or 2053 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 426641520 is about 20655.3024669212. The cubic root of 426641520 is about 752.8140328647.

The spelling of 426641520 in words is "four hundred twenty-six million, six hundred forty-one thousand, five hundred twenty".