402152440 has 16 divisors (see below), whose sum is σ = 904843080. Its totient is φ = 160860960.

The previous prime is 402152417. The next prime is 402152467. The reversal of 402152440 is 44251204.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 5026866 + ... + 5026945.

Almost surely, 2^402152440 is an apocalyptic number.

402152440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402152440 is an abundant number, since it is smaller than the sum of its proper divisors (502690640).

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

402152440 is a wasteful number, since it uses less digits than its factorization.

402152440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10053822 (or 10053818 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 402152440 is about 20053.7388035249. The cubic root of 402152440 is about 738.1255456785.

The spelling of 402152440 in words is "four hundred two million, one hundred fifty-two thousand, four hundred forty".