401326156 has 48 divisors (see below), whose sum is σ = 882104832. Its totient is φ = 155203200.

The previous prime is 401326153. The next prime is 401326169. The reversal of 401326156 is 651623104.

It is a super-2 number, since 2×401326156² = 322125366979472672, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (401326153) 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, 37441 + ... + 46951.

It is an arithmetic number, because the mean of its divisors is an integer number (18377184).

Almost surely, 2^401326156 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 401326156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441052416).

401326156 is an abundant number, since it is smaller than the sum of its proper divisors (480778676).

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

401326156 is a wasteful number, since it uses less digits than its factorization.

401326156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9670 (or 9668 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 401326156 is about 20033.1264659314. The cubic root of 401326156 is about 737.6196682573.

The spelling of 401326156 in words is "four hundred one million, three hundred twenty-six thousand, one hundred fifty-six".