401941872 has 80 divisors (see below), whose sum is σ = 1156314880. Its totient is φ = 133679808.

The previous prime is 401941849. The next prime is 401941873. The reversal of 401941872 is 278149104.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401941873) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277053 + ... + 278499.

It is an arithmetic number, because the mean of its divisors is an integer number (14453936).

Almost surely, 2^401941872 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 401941872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (578157440).

401941872 is an abundant number, since it is smaller than the sum of its proper divisors (754373008).

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

401941872 is a wasteful number, since it uses less digits than its factorization.

401941872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2107 (or 2095 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 401941872 is about 20048.4880227911. The cubic root of 401941872 is about 737.9966950741.

The spelling of 401941872 in words is "four hundred one million, nine hundred forty-one thousand, eight hundred seventy-two".