22770040 has 16 divisors (see below), whose sum is σ = 51232680. Its totient is φ = 9108000.

The previous prime is 22769951. The next prime is 22770049. The reversal of 22770040 is 4007722.

It is a junction number, because it is equal to n+sod(n) for n = 22769993 and 22770020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22770049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284586 + ... + 284665.

Almost surely, 2^22770040 is an apocalyptic number.

22770040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22770040 is an abundant number, since it is smaller than the sum of its proper divisors (28462640).

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

22770040 is a wasteful number, since it uses less digits than its factorization.

22770040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569262 (or 569258 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 22.

The square root of 22770040 is about 4771.7963074716. The cubic root of 22770040 is about 283.4357307705.

Adding to 22770040 its reverse (4007722), we get a palindrome (26777762).

The spelling of 22770040 in words is "twenty-two million, seven hundred seventy thousand, forty".