222406000 has 80 divisors (see below), whose sum is σ = 546893568. Its totient is φ = 87456000.

The previous prime is 222405983. The next prime is 222406007. The reversal of 222406000 is 604222.

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 (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222406007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121089 + ... + 122911.

Almost surely, 2^222406000 is an apocalyptic number.

222406000 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 222406000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273446784).

222406000 is an abundant number, since it is smaller than the sum of its proper divisors (324487568).

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

222406000 is a wasteful number, since it uses less digits than its factorization.

222406000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1907 (or 1891 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 222406000 is about 14913.2826701568. The cubic root of 222406000 is about 605.8737914618.

The spelling of 222406000 in words is "two hundred twenty-two million, four hundred six thousand".