222613540 has 24 divisors (see below), whose sum is σ = 471062592. Its totient is φ = 88364640.

The previous prime is 222613513. The next prime is 222613561. The reversal of 222613540 is 45316222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39864 + ... + 45103.

It is an arithmetic number, because the mean of its divisors is an integer number (19627608).

Almost surely, 2^222613540 is an apocalyptic number.

222613540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222613540 is an abundant number, since it is smaller than the sum of its proper divisors (248449052).

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

222613540 is a wasteful number, since it uses less digits than its factorization.

222613540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85107 (or 85105 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 222613540 is about 14920.2392742208. The cubic root of 222613540 is about 606.0621915863.

Adding to 222613540 its reverse (45316222), we get a palindrome (267929762).

The spelling of 222613540 in words is "two hundred twenty-two million, six hundred thirteen thousand, five hundred forty".