220402434 has 32 divisors (see below), whose sum is σ = 515496960. Its totient is φ = 61507152.

The previous prime is 220402423. The next prime is 220402459. The reversal of 220402434 is 434204022.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 220402434.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59214 + ... + 62825.

It is an arithmetic number, because the mean of its divisors is an integer number (16109280).

Almost surely, 2^220402434 is an apocalyptic number.

220402434 is an abundant number, since it is smaller than the sum of its proper divisors (295094526).

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

220402434 is a wasteful number, since it uses less digits than its factorization.

220402434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122094.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 220402434 is about 14845.9568233240. The cubic root of 220402434 is about 604.0489430831.

Adding to 220402434 its reverse (434204022), we get a palindrome (654606456).

The spelling of 220402434 in words is "two hundred twenty million, four hundred two thousand, four hundred thirty-four".