402740304 has 40 divisors (see below), whose sum is σ = 1085650752. Its totient is φ = 128409600.

The previous prime is 402740257. The next prime is 402740309. The reversal of 402740304 is 403047204.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402740309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181297 + ... + 183504.

Almost surely, 2^402740304 is an apocalyptic number.

It is an amenable number.

402740304 is an abundant number, since it is smaller than the sum of its proper divisors (682910448).

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

402740304 is a wasteful number, since it uses less digits than its factorization.

402740304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364835 (or 364829 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 402740304 is about 20068.3906679136. The cubic root of 402740304 is about 738.4850330532.

Adding to 402740304 its reverse (403047204), we get a palindrome (805787508).

The spelling of 402740304 in words is "four hundred two million, seven hundred forty thousand, three hundred four".