401353520 has 40 divisors (see below), whose sum is σ = 935978784. Its totient is φ = 160054272.

The previous prime is 401353507. The next prime is 401353531. The reversal of 401353520 is 25353104.

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

It is a super-2 number, since 2×401353520² = 322169296032780800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19517 + ... + 34403.

Almost surely, 2^401353520 is an apocalyptic number.

401353520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401353520 is an abundant number, since it is smaller than the sum of its proper divisors (534625264).

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

401353520 is a wasteful number, since it uses less digits than its factorization.

401353520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15237 (or 15231 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 401353520 is about 20033.8094230728. The cubic root of 401353520 is about 737.6364324822.

The spelling of 401353520 in words is "four hundred one million, three hundred fifty-three thousand, five hundred twenty".