401155320 has 32 divisors (see below), whose sum is σ = 1203466320. Its totient is φ = 106974720.

The previous prime is 401155309. The next prime is 401155333. The reversal of 401155320 is 23551104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1671361 + ... + 1671600.

Almost surely, 2^401155320 is an apocalyptic number.

401155320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

401155320 is an abundant number, since it is smaller than the sum of its proper divisors (802311000).

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

401155320 is a wasteful number, since it uses less digits than its factorization.

401155320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3342975 (or 3342971 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 401155320 is about 20028.8621743723. The cubic root of 401155320 is about 737.5149904068.

The spelling of 401155320 in words is "four hundred one million, one hundred fifty-five thousand, three hundred twenty".