8724378 has 32 divisors (see below), whose sum is σ = 19305216. Its totient is φ = 2611008.

The previous prime is 8724377. The next prime is 8724421. The reversal of 8724378 is 8734278.

8724378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×8724378² = 152229542973768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8724371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1375 + ... + 4397.

It is an arithmetic number, because the mean of its divisors is an integer number (603288).

Almost surely, 2^8724378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8724378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9652608).

8724378 is an abundant number, since it is smaller than the sum of its proper divisors (10580838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8724378 is a wasteful number, since it uses less digits than its factorization.

8724378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3078.

The product of its digits is 75264, while the sum is 39.

The square root of 8724378 is about 2953.7058079640. The cubic root of 8724378 is about 205.8629339251.

The spelling of 8724378 in words is "eight million, seven hundred twenty-four thousand, three hundred seventy-eight".