220155534 has 24 divisors (see below), whose sum is σ = 486005832. Its totient is φ = 72000240.

The previous prime is 220155511. The next prime is 220155539. The reversal of 220155534 is 435551022.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 220155498 and 220155507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220155539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114432 + ... + 116339.

It is an arithmetic number, because the mean of its divisors is an integer number (20250243).

Almost surely, 2^220155534 is an apocalyptic number.

220155534 is an abundant number, since it is smaller than the sum of its proper divisors (265850298).

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

220155534 is a wasteful number, since it uses less digits than its factorization.

220155534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230832 (or 230829 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 220155534 is about 14837.6390979158. The cubic root of 220155534 is about 603.8233021862.

The spelling of 220155534 in words is "two hundred twenty million, one hundred fifty-five thousand, five hundred thirty-four".