401782044 has 12 divisors (see below), whose sum is σ = 937491464. Its totient is φ = 133927344.

The previous prime is 401782039. The next prime is 401782057. The reversal of 401782044 is 440287104.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×401782044² = 322857621761635872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 16740907 + ... + 16740930.

Almost surely, 2^401782044 is an apocalyptic number.

It is an amenable number.

401782044 is an abundant number, since it is smaller than the sum of its proper divisors (535709420).

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

401782044 is a wasteful number, since it uses less digits than its factorization.

401782044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33481844 (or 33481842 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 30.

The square root of 401782044 is about 20044.5015902117. The cubic root of 401782044 is about 737.8988632053.

The spelling of 401782044 in words is "four hundred one million, seven hundred eighty-two thousand, forty-four".