402791274 has 12 divisors (see below), whose sum is σ = 872714466. Its totient is φ = 134263752.

The previous prime is 402791273. The next prime is 402791293. The reversal of 402791274 is 472197204.

It can be written as a sum of positive squares in only one way, i.e., 349428249 + 53363025 = 18693^2 + 7305^2 .

It is not an unprimeable number, because it can be changed into a prime (402791273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11188629 + ... + 11188664.

Almost surely, 2^402791274 is an apocalyptic number.

402791274 is an abundant number, since it is smaller than the sum of its proper divisors (469923192).

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

402791274 is a wasteful number, since it uses less digits than its factorization.

402791274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22377301 (or 22377298 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 402791274 is about 20069.6605352457. The cubic root of 402791274 is about 738.5161854642.

The spelling of 402791274 in words is "four hundred two million, seven hundred ninety-one thousand, two hundred seventy-four".