24720965 has 16 divisors (see below), whose sum is σ = 30205440. Its totient is φ = 19420800.

The previous prime is 24720961. The next prime is 24720967. The reversal of 24720965 is 56902742.

It is not a de Polignac number, because 24720965 - 2² = 24720961 is a prime.

It is a super-2 number, since 2×24720965² = 1222252221062450, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24720961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103316 + ... + 103554.

It is an arithmetic number, because the mean of its divisors is an integer number (1887840).

Almost surely, 2^24720965 is an apocalyptic number.

It is an amenable number.

24720965 is a deficient number, since it is larger than the sum of its proper divisors (5484475).

24720965 is a wasteful number, since it uses less digits than its factorization.

24720965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 24720965 is about 4972.0182018975. The cubic root of 24720965 is about 291.3098300953.

It can be divided in two parts, 247 and 20965, that added together give a palindrome (21212).

The spelling of 24720965 in words is "twenty-four million, seven hundred twenty thousand, nine hundred sixty-five".