401870288 has 20 divisors (see below), whose sum is σ = 790247040. Its totient is φ = 197935584.

The previous prime is 401870281. The next prime is 401870309. The reversal of 401870288 is 882078104.

It is a happy number.

It is a super-2 number, since 2×401870288² = 322999456754405888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401870281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186368 + ... + 188511.

It is an arithmetic number, because the mean of its divisors is an integer number (39512352).

Almost surely, 2^401870288 is an apocalyptic number.

It is an amenable number.

401870288 is a deficient number, since it is larger than the sum of its proper divisors (388376752).

401870288 is a wasteful number, since it uses less digits than its factorization.

401870288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374954 (or 374948 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 401870288 is about 20046.7026715118. The cubic root of 401870288 is about 737.9528811998.

The spelling of 401870288 in words is "four hundred one million, eight hundred seventy thousand, two hundred eighty-eight".