22761489 has 16 divisors (see below), whose sum is σ = 31299840. Its totient is φ = 14705280.

The previous prime is 22761469. The next prime is 22761499. The reversal of 22761489 is 98416722.

22761489 = 1116² + 1117² + ... + 1133².

It is not a de Polignac number, because 22761489 - 2⁵ = 22761457 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22761439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14629 + ... + 16109.

It is an arithmetic number, because the mean of its divisors is an integer number (1956240).

Almost surely, 2^22761489 is an apocalyptic number.

It is an amenable number.

22761489 is a deficient number, since it is larger than the sum of its proper divisors (8538351).

22761489 is a wasteful number, since it uses less digits than its factorization.

22761489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640.

The product of its digits is 48384, while the sum is 39.

The square root of 22761489 is about 4770.9002295164. The cubic root of 22761489 is about 283.4002460957.

It can be divided in two parts, 227 and 61489, that added together give a palindrome (61716).

The spelling of 22761489 in words is "twenty-two million, seven hundred sixty-one thousand, four hundred eighty-nine".