402218498 has 32 divisors (see below), whose sum is σ = 670602240. Its totient is φ = 179406160.

The previous prime is 402218491. The next prime is 402218533. The reversal of 402218498 is 894812204.

It is not an unprimeable number, because it can be changed into a prime (402218491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304283 + ... + 305601.

It is an arithmetic number, because the mean of its divisors is an integer number (20956320).

Almost surely, 2^402218498 is an apocalyptic number.

402218498 is a deficient number, since it is larger than the sum of its proper divisors (268383742).

402218498 is a wasteful number, since it uses less digits than its factorization.

402218498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1582.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 402218498 is about 20055.3857604385. The cubic root of 402218498 is about 738.1659585692.

The spelling of 402218498 in words is "four hundred two million, two hundred eighteen thousand, four hundred ninety-eight".