401913920 has 56 divisors (see below), whose sum is σ = 977457024. Its totient is φ = 157339136.

The previous prime is 401913917. The next prime is 401913947. The reversal of 401913920 is 29319104.

It is a happy 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, 1679 + ... + 28401.

Almost surely, 2^401913920 is an apocalyptic number.

401913920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 401913920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488728512).

401913920 is an abundant number, since it is smaller than the sum of its proper divisors (575543104).

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

401913920 is a wasteful number, since it uses less digits than its factorization.

401913920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26787 (or 26777 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 401913920 is about 20047.7909007451. The cubic root of 401913920 is about 737.9795873252.

The spelling of 401913920 in words is "four hundred one million, nine hundred thirteen thousand, nine hundred twenty".