222038520 has 64 divisors (see below), whose sum is σ = 726675840. Its totient is φ = 53827200.

The previous prime is 222038497. The next prime is 222038521. The reversal of 222038520 is 25830222.

222038520 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×222038520² = 98602208727580800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222038521) 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, 82786 + ... + 85425.

It is an arithmetic number, because the mean of its divisors is an integer number (11354310).

Almost surely, 2^222038520 is an apocalyptic number.

222038520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222038520 is an abundant number, since it is smaller than the sum of its proper divisors (504637320).

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

222038520 is a wasteful number, since it uses less digits than its factorization.

222038520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168236 (or 168232 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 222038520 is about 14900.9570162456. The cubic root of 222038520 is about 605.5399137197.

Adding to 222038520 its reverse (25830222), we get a palindrome (247868742).

The spelling of 222038520 in words is "two hundred twenty-two million, thirty-eight thousand, five hundred twenty".