401351628 has 12 divisors (see below), whose sum is σ = 936487160. Its totient is φ = 133783872.

The previous prime is 401351627. The next prime is 401351647. The reversal of 401351628 is 826153104.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×401351628² = 322166258596500768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401351595 and 401351604.

It is not an unprimeable number, because it can be changed into a prime (401351627) 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, 16722973 + ... + 16722996.

Almost surely, 2^401351628 is an apocalyptic number.

It is an amenable number.

401351628 is an abundant number, since it is smaller than the sum of its proper divisors (535135532).

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

401351628 is a wasteful number, since it uses less digits than its factorization.

401351628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33445976 (or 33445974 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 401351628 is about 20033.7622028415. The cubic root of 401351628 is about 737.6352733958.

The spelling of 401351628 in words is "four hundred one million, three hundred fifty-one thousand, six hundred twenty-eight".