24788978 has 8 divisors (see below), whose sum is σ = 37213020. Its totient is φ = 12384640.

The previous prime is 24788971. The next prime is 24788983. The reversal of 24788978 is 87988742.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24631369 + 157609 = 4963^2 + 397^2 .

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

It is a super-2 number, since 2×24788978² = 1228986860568968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (24788971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1223 + ... + 7146.

Almost surely, 2^24788978 is an apocalyptic number.

24788978 is a deficient number, since it is larger than the sum of its proper divisors (12424042).

24788978 is a wasteful number, since it uses less digits than its factorization.

24788978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9852.

The product of its digits is 1806336, while the sum is 53.

The square root of 24788978 is about 4978.8530807808. The cubic root of 24788978 is about 291.5767386795.

The spelling of 24788978 in words is "twenty-four million, seven hundred eighty-eight thousand, nine hundred seventy-eight".