402220334 has 8 divisors (see below), whose sum is σ = 603446760. Its totient is φ = 201071416.

The previous prime is 402220333. The next prime is 402220349. The reversal of 402220334 is 433022204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402220331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3944 + ... + 28635.

It is an arithmetic number, because the mean of its divisors is an integer number (75430845).

Almost surely, 2^402220334 is an apocalyptic number.

402220334 is a deficient number, since it is larger than the sum of its proper divisors (201226426).

402220334 is a wasteful number, since it uses less digits than its factorization.

402220334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38754.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 402220334 is about 20055.4315336270. The cubic root of 402220334 is about 738.1670817321.

Adding to 402220334 its reverse (433022204), we get a palindrome (835242538).

The spelling of 402220334 in words is "four hundred two million, two hundred twenty thousand, three hundred thirty-four".