401736 has 32 divisors (see below), whose sum is σ = 1058400. Its totient is φ = 126720.

The previous prime is 401711. The next prime is 401743. The reversal of 401736 is 637104.

It is a super-2 number, since 2×401736² = 322783627392, which contains 22 as substring.

It is an unprimeable number.

401736 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16 + ... + 896.

It is an arithmetic number, because the mean of its divisors is an integer number (33075).

2⁴⁰¹⁷³⁶ 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 401736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (529200).

401736 is an abundant number, since it is smaller than the sum of its proper divisors (656664).

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

401736 is a wasteful number, since it uses less digits than its factorization.

401736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909 (or 905 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 401736 is about 633.8264746758. The cubic root of 401736 is about 73.7870674528.

The spelling of 401736 in words is "four hundred one thousand, seven hundred thirty-six".