401328672 has 24 divisors (see below), whose sum is σ = 1053488016. Its totient is φ = 133776192.

The previous prime is 401328671. The next prime is 401328701. The reversal of 401328672 is 276823104.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×401328672² = 322129405938567168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401328671) 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, 2090158 + ... + 2090349.

It is an arithmetic number, because the mean of its divisors is an integer number (43895334).

Almost surely, 2^401328672 is an apocalyptic number.

It is an amenable number.

401328672 is an abundant number, since it is smaller than the sum of its proper divisors (652159344).

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

401328672 is a wasteful number, since it uses less digits than its factorization.

401328672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180520 (or 4180512 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 401328672 is about 20033.1892618225. The cubic root of 401328672 is about 737.6212096862.

The spelling of 401328672 in words is "four hundred one million, three hundred twenty-eight thousand, six hundred seventy-two".