402082240 has 84 divisors (see below), whose sum is σ = 1113821496. Its totient is φ = 137851392.

The previous prime is 402082229. The next prime is 402082243. The reversal of 402082240 is 42280204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402082243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2859 + ... + 28501.

Almost surely, 2^402082240 is an apocalyptic number.

402082240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402082240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (556910748).

402082240 is an abundant number, since it is smaller than the sum of its proper divisors (711739256).

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

402082240 is a wasteful number, since it uses less digits than its factorization.

402082240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25674 (or 25657 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 402082240 is about 20051.9884300784. The cubic root of 402082240 is about 738.0825939489.

The spelling of 402082240 in words is "four hundred two million, eighty-two thousand, two hundred forty".