426352440 has 128 divisors (see below), whose sum is σ = 1319976000. Its totient is φ = 110100480.

The previous prime is 426352427. The next prime is 426352441. The reversal of 426352440 is 44253624.

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

It is a junction number, because it is equal to n+sod(n) for n = 426352398 and 426352407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426352441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 949336 + ... + 949784.

Almost surely, 2^426352440 is an apocalyptic number.

426352440 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 426352440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (659988000).

426352440 is an abundant number, since it is smaller than the sum of its proper divisors (893623560).

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

426352440 is a wasteful number, since it uses less digits than its factorization.

426352440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697 (or 693 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 426352440 is about 20648.3035622784. The cubic root of 426352440 is about 752.6439660828.

The spelling of 426352440 in words is "four hundred twenty-six million, three hundred fifty-two thousand, four hundred forty".