426376840 has 16 divisors (see below), whose sum is σ = 959347980. Its totient is φ = 170550720.

The previous prime is 426376817. The next prime is 426376849. The reversal of 426376840 is 48673624.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 388011204 + 38365636 = 19698^2 + 6194^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 10659421 = 426376840 / (4 + 2 + 6 + 3 + 7 + 6 + 8 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 426376793 and 426376802.

It is not an unprimeable number, because it can be changed into a prime (426376849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5329671 + ... + 5329750.

Almost surely, 2^426376840 is an apocalyptic number.

426376840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426376840 is an abundant number, since it is smaller than the sum of its proper divisors (532971140).

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

426376840 is a wasteful number, since it uses less digits than its factorization.

426376840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10659432 (or 10659428 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 40.

The square root of 426376840 is about 20648.8944013959. The cubic root of 426376840 is about 752.6583236586.

The spelling of 426376840 in words is "four hundred twenty-six million, three hundred seventy-six thousand, eight hundred forty".