402080720 has 40 divisors (see below), whose sum is σ = 936085920. Its totient is φ = 160617600.

The previous prime is 402080671. The next prime is 402080747. The reversal of 402080720 is 27080204.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

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, 65795 + ... + 71645.

It is an arithmetic number, because the mean of its divisors is an integer number (23402148).

Almost surely, 2^402080720 is an apocalyptic number.

402080720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402080720 is an abundant number, since it is smaller than the sum of its proper divisors (534005200).

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

402080720 is a wasteful number, since it uses less digits than its factorization.

402080720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6723 (or 6717 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 402080720 is about 20051.9505285645. The cubic root of 402080720 is about 738.0816638846.

The spelling of 402080720 in words is "four hundred two million, eighty thousand, seven hundred twenty".