401636532 has 24 divisors (see below), whose sum is σ = 1022347872. Its totient is φ = 121708000.

The previous prime is 401636531. The next prime is 401636537. The reversal of 401636532 is 235636104.

It is a super-2 number, since 2×401636532² = 322623807673974048, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401636532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401636531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1521219 + ... + 1521482.

It is an arithmetic number, because the mean of its divisors is an integer number (42597828).

Almost surely, 2^401636532 is an apocalyptic number.

It is an amenable number.

401636532 is an abundant number, since it is smaller than the sum of its proper divisors (620711340).

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

401636532 is a wasteful number, since it uses less digits than its factorization.

401636532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3042719 (or 3042717 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 401636532 is about 20040.8715379347. The cubic root of 401636532 is about 737.8097716975.

The spelling of 401636532 in words is "four hundred one million, six hundred thirty-six thousand, five hundred thirty-two".