426629040 has 80 divisors (see below), whose sum is σ = 1392172800. Its totient is φ = 107778816.

The previous prime is 426629033. The next prime is 426629041. The reversal of 426629040 is 40926624.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 426628992 and 426629010.

It is not an unprimeable number, because it can be changed into a prime (426629041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42220 + ... + 51339.

It is an arithmetic number, because the mean of its divisors is an integer number (17402160).

Almost surely, 2^426629040 is an apocalyptic number.

426629040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426629040 is an abundant number, since it is smaller than the sum of its proper divisors (965543760).

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

426629040 is a wasteful number, since it uses less digits than its factorization.

426629040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93594 (or 93588 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 426629040 is about 20655.0003631082. Note that the first 3 decimals coincide. The cubic root of 426629040 is about 752.8066924236.

The spelling of 426629040 in words is "four hundred twenty-six million, six hundred twenty-nine thousand, forty".