222899040 has 576 divisors, whose sum is σ = 989392320. Its totient is φ = 47029248.

The previous prime is 222899009. The next prime is 222899059. The reversal of 222899040 is 40998222.

222899040 = 43² + 44² + ... + 874².

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 222898986 and 222899004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17146074 + ... + 17146086.

It is an arithmetic number, because the mean of its divisors is an integer number (1717695).

Almost surely, 2^222899040 is an apocalyptic number.

222899040 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 222899040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494696160).

222899040 is an abundant number, since it is smaller than the sum of its proper divisors (766493280).

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

222899040 is an equidigital number, since it uses as much as digits as its factorization.

222899040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 30 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 222899040 is about 14929.8037495474. The cubic root of 222899040 is about 606.3211707993.

It can be divided in two parts, 22289 and 9040, that added together give a square (31329 = 177²).

The spelling of 222899040 in words is "two hundred twenty-two million, eight hundred ninety-nine thousand, forty".