402832278 has 52 divisors (see below), whose sum is σ = 908763540. Its totient is φ = 133923132.

The previous prime is 402832273. The next prime is 402832307. The reversal of 402832278 is 872238204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402832273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 25 ways as a sum of consecutive naturals, for example, 1062693 + ... + 1063071.

Almost surely, 2^402832278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402832278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454381770).

402832278 is an abundant number, since it is smaller than the sum of its proper divisors (505931262).

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

402832278 is an frugal number, since it uses more digits than its factorization.

402832278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417 (or 384 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 402832278 is about 20070.6820511910. The cubic root of 402832278 is about 738.5412448370.

The spelling of 402832278 in words is "four hundred two million, eight hundred thirty-two thousand, two hundred seventy-eight".