400061782 has 16 divisors (see below), whose sum is σ = 636850512. Its totient is φ = 187832320.

The previous prime is 400061749. The next prime is 400061803. The reversal of 400061782 is 287160004.

It is a self number, because there is not a number n which added to its sum of digits gives 400061782.

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 7 ways as a sum of consecutive naturals, for example, 1782 + ... + 28342.

It is an arithmetic number, because the mean of its divisors is an integer number (39803157).

Almost surely, 2^400061782 is an apocalyptic number.

400061782 is a deficient number, since it is larger than the sum of its proper divisors (236788730).

400061782 is a wasteful number, since it uses less digits than its factorization.

400061782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27023.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 400061782 is about 20001.5444903637. The cubic root of 400061782 is about 736.8442322475.

The spelling of 400061782 in words is "four hundred million, sixty-one thousand, seven hundred eighty-two".