426689720 has 32 divisors (see below), whose sum is σ = 971626320. Its totient is φ = 168618240.

The previous prime is 426689719. The next prime is 426689723. The reversal of 426689720 is 27986624.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426689723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60941 + ... + 67580.

Almost surely, 2^426689720 is an apocalyptic number.

426689720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426689720 is an abundant number, since it is smaller than the sum of its proper divisors (544936600).

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

426689720 is a wasteful number, since it uses less digits than its factorization.

426689720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128615 (or 128611 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 426689720 is about 20656.4692045858. The cubic root of 426689720 is about 752.8423816214.

The spelling of 426689720 in words is "four hundred twenty-six million, six hundred eighty-nine thousand, seven hundred twenty".