426165840 has 80 divisors (see below), whose sum is σ = 1467912000. Its totient is φ = 113643648.

The previous prime is 426165823. The next prime is 426165841. The reversal of 426165840 is 48561624.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 426165795 and 426165804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426165841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96490 + ... + 100809.

It is an arithmetic number, because the mean of its divisors is an integer number (18348900).

Almost surely, 2^426165840 is an apocalyptic number.

426165840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426165840 is an abundant number, since it is smaller than the sum of its proper divisors (1041746160).

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

426165840 is a wasteful number, since it uses less digits than its factorization.

426165840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197321 (or 197309 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 426165840 is about 20643.7845367559. The cubic root of 426165840 is about 752.5341478159.

The spelling of 426165840 in words is "four hundred twenty-six million, one hundred sixty-five thousand, eight hundred forty".