22697140 has 24 divisors (see below), whose sum is σ = 49308840. Its totient is φ = 8765568.

The previous prime is 22697117. The next prime is 22697141. The reversal of 22697140 is 4179622.

It can be written as a sum of positive squares in 4 ways, for example, as 7997584 + 14699556 = 2828^2 + 3834^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22697141) 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, 18987 + ... + 20146.

It is an arithmetic number, because the mean of its divisors is an integer number (2054535).

Almost surely, 2^22697140 is an apocalyptic number.

22697140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22697140 is an abundant number, since it is smaller than the sum of its proper divisors (26611700).

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

22697140 is a wasteful number, since it uses less digits than its factorization.

22697140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39171 (or 39169 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 22697140 is about 4764.1515509060. The cubic root of 22697140 is about 283.1329271026.

It can be divided in two parts, 2269 and 7140, that added together give a square (9409 = 97²).

The spelling of 22697140 in words is "twenty-two million, six hundred ninety-seven thousand, one hundred forty".