401673216 has 88 divisors (see below), whose sum is σ = 1223614720. Its totient is φ = 114757632.

The previous prime is 401673197. The next prime is 401673247. The reversal of 401673216 is 612376104.

It is a super-2 number, since 2×401673216² = 322682744903565312, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12165 + ... + 30843.

Almost surely, 2^401673216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401673216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (611807360).

401673216 is an abundant number, since it is smaller than the sum of its proper divisors (821941504).

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

401673216 is a wasteful number, since it uses less digits than its factorization.

401673216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18709 (or 18691 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 30.

The square root of 401673216 is about 20041.7867466950. The cubic root of 401673216 is about 737.8322339551.

The spelling of 401673216 in words is "four hundred one million, six hundred seventy-three thousand, two hundred sixteen".