22740136 has 8 divisors (see below), whose sum is σ = 42637770. Its totient is φ = 11370064.

The previous prime is 22740073. The next prime is 22740149. The reversal of 22740136 is 63104722.

It can be written as a sum of positive squares in only one way, i.e., 22372900 + 367236 = 4730^2 + 606^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×22740136² = 1034227570596992, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22740136.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1421251 + ... + 1421266.

Almost surely, 2^22740136 is an apocalyptic number.

It is an amenable number.

22740136 is a deficient number, since it is larger than the sum of its proper divisors (19897634).

22740136 is a wasteful number, since it uses less digits than its factorization.

22740136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842523 (or 2842519 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 22740136 is about 4768.6618668134. The cubic root of 22740136 is about 283.3115972560.

Adding to 22740136 its reverse (63104722), we get a palindrome (85844858).

The spelling of 22740136 in words is "twenty-two million, seven hundred forty thousand, one hundred thirty-six".