220420415 has 8 divisors (see below), whose sum is σ = 264647040. Its totient is φ = 176241312.

The previous prime is 220420411. The next prime is 220420439. The reversal of 220420415 is 514024022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 220420415 - 2² = 220420411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220420411) 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, 719 + ... + 21008.

It is an arithmetic number, because the mean of its divisors is an integer number (33080880).

Almost surely, 2^220420415 is an apocalyptic number.

220420415 is a deficient number, since it is larger than the sum of its proper divisors (44226625).

220420415 is a wasteful number, since it uses less digits than its factorization.

220420415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23761.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 220420415 is about 14846.5623967301. The cubic root of 220420415 is about 604.0653692608.

Adding to 220420415 its reverse (514024022), we get a palindrome (734444437).

The spelling of 220420415 in words is "two hundred twenty million, four hundred twenty thousand, four hundred fifteen".