402274278 has 96 divisors (see below), whose sum is σ = 1048559616. Its totient is φ = 108972864.

The previous prime is 402274277. The next prime is 402274307. The reversal of 402274278 is 872472204.

402274278 is a `hidden beast` number, since 4 + 0 + 227 + 427 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402274273) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 367500 + ... + 368592.

It is an arithmetic number, because the mean of its divisors is an integer number (10922496).

Almost surely, 2^402274278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402274278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (524279808).

402274278 is an abundant number, since it is smaller than the sum of its proper divisors (646285338).

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

402274278 is a wasteful number, since it uses less digits than its factorization.

402274278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258 (or 1255 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 402274278 is about 20056.7763611204. The cubic root of 402274278 is about 738.2000801508.

The spelling of 402274278 in words is "four hundred two million, two hundred seventy-four thousand, two hundred seventy-eight".