401562216 has 72 divisors (see below), whose sum is σ = 1195447890. Its totient is φ = 121682880.

The previous prime is 401562211. The next prime is 401562229. The reversal of 401562216 is 612265104.

It can be written as a sum of positive squares in only one way, i.e., 343954116 + 57608100 = 18546^2 + 7590^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×401562216² = 322504426637661312, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401562216.

It is not an unprimeable number, because it can be changed into a prime (401562211) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 14335 + ... + 31758.

Almost surely, 2^401562216 is an apocalyptic number.

It is an amenable number.

401562216 is an abundant number, since it is smaller than the sum of its proper divisors (793885674).

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

401562216 is a wasteful number, since it uses less digits than its factorization.

401562216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46127 (or 46109 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 401562216 is about 20039.0173411772. The cubic root of 401562216 is about 737.7642625130.

The spelling of 401562216 in words is "four hundred one million, five hundred sixty-two thousand, two hundred sixteen".