401202036 has 18 divisors (see below), whose sum is σ = 1014149682. Its totient is φ = 133734000.

The previous prime is 401201987. The next prime is 401202071. The reversal of 401202036 is 630202104.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 226803600 + 174398436 = 15060^2 + 13206^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5572215 + ... + 5572286.

It is an arithmetic number, because the mean of its divisors is an integer number (56341649).

Almost surely, 2^401202036 is an apocalyptic number.

It is an amenable number.

401202036 is an abundant number, since it is smaller than the sum of its proper divisors (612947646).

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

401202036 is a wasteful number, since it uses less digits than its factorization.

401202036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11144511 (or 11144506 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 401202036 is about 20030.0283574437. The cubic root of 401202036 is about 737.5436180656.

The spelling of 401202036 in words is "four hundred one million, two hundred two thousand, thirty-six".