24978947 has 8 divisors (see below), whose sum is σ = 29532000. Its totient is φ = 20672064.

The previous prime is 24978937. The next prime is 24978971. The reversal of 24978947 is 74987942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 24978947 - 2¹⁶ = 24913411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24978895 and 24978904.

It is not an unprimeable number, because it can be changed into a prime (24978937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61322 + ... + 61727.

It is an arithmetic number, because the mean of its divisors is an integer number (3691500).

Almost surely, 2^24978947 is an apocalyptic number.

24978947 is a deficient number, since it is larger than the sum of its proper divisors (4553053).

24978947 is a wasteful number, since it uses less digits than its factorization.

24978947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123085.

The product of its digits is 1016064, while the sum is 50.

The square root of 24978947 is about 4997.8942565845. The cubic root of 24978947 is about 292.3196716431.

The spelling of 24978947 in words is "twenty-four million, nine hundred seventy-eight thousand, nine hundred forty-seven".