426993578 has 16 divisors (see below), whose sum is σ = 707564160. Its totient is φ = 191630400.

The previous prime is 426993577. The next prime is 426993587. The reversal of 426993578 is 875399624.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (426993577) 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 7 ways as a sum of consecutive naturals, for example, 121103 + ... + 124578.

It is an arithmetic number, because the mean of its divisors is an integer number (44222760).

Almost surely, 2^426993578 is an apocalyptic number.

426993578 is a deficient number, since it is larger than the sum of its proper divisors (280570582).

426993578 is a wasteful number, since it uses less digits than its factorization.

426993578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245773.

The product of its digits is 3265920, while the sum is 53.

The square root of 426993578 is about 20663.8229280063. The cubic root of 426993578 is about 753.0210461088.

The spelling of 426993578 in words is "four hundred twenty-six million, nine hundred ninety-three thousand, five hundred seventy-eight".