24972309 has 12 divisors (see below), whose sum is σ = 36189036. Its totient is φ = 16593792.

The previous prime is 24972287. The next prime is 24972331. The reversal of 24972309 is 90327942.

It is an interprime number because it is at equal distance from previous prime (24972287) and next prime (24972331).

It can be written as a sum of positive squares in 2 ways, for example, as 10909809 + 14062500 = 3303^2 + 3750^2 .

It is not a de Polignac number, because 24972309 - 2⁸ = 24972053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24972349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1524 + ... + 7229.

It is an arithmetic number, because the mean of its divisors is an integer number (3015753).

Almost surely, 2^24972309 is an apocalyptic number.

It is an amenable number.

24972309 is a deficient number, since it is larger than the sum of its proper divisors (11216727).

24972309 is a wasteful number, since it uses less digits than its factorization.

24972309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9076 (or 9073 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 24972309 is about 4997.2301327836. The cubic root of 24972309 is about 292.2937753034.

It can be divided in two parts, 24972 and 309, that added together give a square (25281 = 159²).

The spelling of 24972309 in words is "twenty-four million, nine hundred seventy-two thousand, three hundred nine".