403426720 has 24 divisors (see below), whose sum is σ = 953096004. Its totient is φ = 161370624.

The previous prime is 403426717. The next prime is 403426741. The reversal of 403426720 is 27624304.

It can be written as a sum of positive squares in 2 ways, for example, as 330221584 + 73205136 = 18172^2 + 8556^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1260549 + ... + 1260868.

Almost surely, 2^403426720 is an apocalyptic number.

403426720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

403426720 is an abundant number, since it is smaller than the sum of its proper divisors (549669284).

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

403426720 is a wasteful number, since it uses less digits than its factorization.

403426720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521432 (or 2521424 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The square root of 403426720 is about 20085.4853065591. The cubic root of 403426720 is about 738.9043439794.

The spelling of 403426720 in words is "four hundred three million, four hundred twenty-six thousand, seven hundred twenty".