22262540 has 24 divisors (see below), whose sum is σ = 47045040. Its totient is φ = 8849088.

The previous prime is 22262507. The next prime is 22262543. The reversal of 22262540 is 4526222.

It is not an unprimeable number, because it can be changed into a prime (22262543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155 + ... + 6674.

It is an arithmetic number, because the mean of its divisors is an integer number (1960210).

Almost surely, 2^22262540 is an apocalyptic number.

22262540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22262540 is an abundant number, since it is smaller than the sum of its proper divisors (24782500).

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

22262540 is a wasteful number, since it uses less digits than its factorization.

22262540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7001 (or 6999 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 22262540 is about 4718.3196161345. The cubic root of 22262540 is about 281.3141456982.

Adding to 22262540 its reverse (4526222), we get a palindrome (26788762).

The spelling of 22262540 in words is "twenty-two million, two hundred sixty-two thousand, five hundred forty".