400282464 has 24 divisors (see below), whose sum is σ = 1050741720. Its totient is φ = 133427456.

The previous prime is 400282457. The next prime is 400282469. The reversal of 400282464 is 464282004.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×400282464² = 320452101971822592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400282469) 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 3 ways as a sum of consecutive naturals, for example, 2084709 + ... + 2084900.

It is an arithmetic number, because the mean of its divisors is an integer number (43780905).

Almost surely, 2^400282464 is an apocalyptic number.

It is an amenable number.

400282464 is an abundant number, since it is smaller than the sum of its proper divisors (650459256).

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

400282464 is a wasteful number, since it uses less digits than its factorization.

400282464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4169622 (or 4169614 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 400282464 is about 20007.0603537851. The cubic root of 400282464 is about 736.9796932988.

The spelling of 400282464 in words is "four hundred million, two hundred eighty-two thousand, four hundred sixty-four".