401536 has 16 divisors (see below), whose sum is σ = 800190. Its totient is φ = 200704.

The previous prime is 401519. The next prime is 401537. The reversal of 401536 is 635104.

401536 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 207936 + 193600 = 456^2 + 440^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×401536² = 322462318592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1441 + ... + 1696.

2⁴⁰¹⁵³⁶ is an apocalyptic number.

It is an amenable number.

401536 is a deficient number, since it is larger than the sum of its proper divisors (398654).

401536 is an equidigital number, since it uses as much as digits as its factorization.

401536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3151 (or 3139 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 401536 is about 633.6686831460. The cubic root of 401536 is about 73.7748207177.

The spelling of 401536 in words is "four hundred one thousand, five hundred thirty-six".