222158000 has 80 divisors (see below), whose sum is σ = 542483136. Its totient is φ = 87987200.

The previous prime is 222157993. The next prime is 222158017. The reversal of 222158000 is 851222.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 225509 + ... + 226491.

Almost surely, 2^222158000 is an apocalyptic number.

222158000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222158000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271241568).

222158000 is an abundant number, since it is smaller than the sum of its proper divisors (320325136).

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

222158000 is a wasteful number, since it uses less digits than its factorization.

222158000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119 (or 1103 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 222158000 is about 14904.9656155256. The cubic root of 222158000 is about 605.6485088942.

The spelling of 222158000 in words is "two hundred twenty-two million, one hundred fifty-eight thousand".