401516538 has 8 divisors (see below), whose sum is σ = 803033088. Its totient is φ = 133838844.

The previous prime is 401516491. The next prime is 401516561. The reversal of 401516538 is 835615104.

It is a sphenic number, since it is the product of 3 distinct primes.

401516538 is an admirable number.

It is a super-2 number, since 2×401516538² = 322431060575010888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401516499 and 401516508.

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, 33459706 + ... + 33459717.

It is an arithmetic number, because the mean of its divisors is an integer number (100379136).

Almost surely, 2^401516538 is an apocalyptic number.

401516538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

401516538 is a wasteful number, since it uses less digits than its factorization.

401516538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66919428.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 401516538 is about 20037.8775822191. The cubic root of 401516538 is about 737.7362877081.

The spelling of 401516538 in words is "four hundred one million, five hundred sixteen thousand, five hundred thirty-eight".