22012530 has 16 divisors (see below), whose sum is σ = 52830144. Its totient is φ = 5870000.

The previous prime is 22012519. The next prime is 22012597. The reversal of 22012530 is 3521022.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 366846 + ... + 366905.

It is an arithmetic number, because the mean of its divisors is an integer number (3301884).

Almost surely, 2^22012530 is an apocalyptic number.

22012530 is an abundant number, since it is smaller than the sum of its proper divisors (30817614).

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

22012530 is a wasteful number, since it uses less digits than its factorization.

22012530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733761.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 22012530 is about 4691.7512721797. The cubic root of 22012530 is about 280.2571192616.

Adding to 22012530 its reverse (3521022), we get a palindrome (25533552).

The spelling of 22012530 in words is "twenty-two million, twelve thousand, five hundred thirty".