8749240 has 32 divisors (see below), whose sum is σ = 20062080. Its totient is φ = 3432832.

The previous prime is 8749229. The next prime is 8749243. The reversal of 8749240 is 429478.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 8749196 and 8749205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8749243) 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, 57 + ... + 4183.

It is an arithmetic number, because the mean of its divisors is an integer number (626940).

Almost surely, 2^8749240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8749240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10031040).

8749240 is an abundant number, since it is smaller than the sum of its proper divisors (11312840).

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

8749240 is a wasteful number, since it uses less digits than its factorization.

8749240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191 (or 4187 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 8749240 is about 2957.9114253135. The cubic root of 8749240 is about 206.0582987666.

The spelling of 8749240 in words is "eight million, seven hundred forty-nine thousand, two hundred forty".