220815342 has 64 divisors (see below), whose sum is σ = 537189120. Its totient is φ = 66679200.

The previous prime is 220815323. The next prime is 220815373. The reversal of 220815342 is 243518022.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249633 + ... + 250515.

It is an arithmetic number, because the mean of its divisors is an integer number (8393580).

Almost surely, 2^220815342 is an apocalyptic number.

220815342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 220815342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268594560).

220815342 is an abundant number, since it is smaller than the sum of its proper divisors (316373778).

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

220815342 is a wasteful number, since it uses less digits than its factorization.

220815342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326 (or 1320 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 220815342 is about 14859.8567287844. The cubic root of 220815342 is about 604.4259217514.

The spelling of 220815342 in words is "two hundred twenty million, eight hundred fifteen thousand, three hundred forty-two".