24720478 has 4 divisors (see below), whose sum is σ = 37080720. Its totient is φ = 12360238.

The previous prime is 24720473. The next prime is 24720497. The reversal of 24720478 is 87402742.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×24720478² = 1222204065096968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24720473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6180118 + ... + 6180121.

It is an arithmetic number, because the mean of its divisors is an integer number (9270180).

Almost surely, 2^24720478 is an apocalyptic number.

24720478 is a deficient number, since it is larger than the sum of its proper divisors (12360242).

24720478 is a wasteful number, since it uses less digits than its factorization.

24720478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12360241.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 24720478 is about 4971.9692275798. The cubic root of 24720478 is about 291.3079171600.

The spelling of 24720478 in words is "twenty-four million, seven hundred twenty thousand, four hundred seventy-eight".