22987503 has 32 divisors (see below), whose sum is σ = 42462720. Its totient is φ = 11940480.

The previous prime is 22987501. The next prime is 22987513. The reversal of 22987503 is 30578922.

Added to its reverse (30578922) it gives a triangular number (53566425 = T₁₀₃₅₀).

It is a happy number.

It is not a de Polignac number, because 22987503 - 2¹ = 22987501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22987501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3450 + ... + 7607.

It is an arithmetic number, because the mean of its divisors is an integer number (1326960).

Almost surely, 2^22987503 is an apocalyptic number.

22987503 is a deficient number, since it is larger than the sum of its proper divisors (19475217).

22987503 is a wasteful number, since it uses less digits than its factorization.

22987503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11084 (or 11078 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 22987503 is about 4794.5284439661. The cubic root of 22987503 is about 284.3351816889.

Adding to 22987503 its reverse (30578922), we get a triangular number (53566425 = T₁₀₃₅₀).

It can be divided in two parts, 2298 and 7503, that added together give a square (9801 = 99²).

The spelling of 22987503 in words is "twenty-two million, nine hundred eighty-seven thousand, five hundred three".