8742432 has 48 divisors (see below), whose sum is σ = 24161760. Its totient is φ = 2760192.

The previous prime is 8742421. The next prime is 8742449. The reversal of 8742432 is 2342478.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 8742432.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573 + ... + 4220.

It is an arithmetic number, because the mean of its divisors is an integer number (503370).

Almost surely, 2^8742432 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 8742432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12080880).

8742432 is an abundant number, since it is smaller than the sum of its proper divisors (15419328).

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

8742432 is a wasteful number, since it uses less digits than its factorization.

8742432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4825 (or 4817 counting only the distinct ones).

The product of its digits is 10752, while the sum is 30.

The square root of 8742432 is about 2956.7603893451. The cubic root of 8742432 is about 206.0048385454.

The spelling of 8742432 in words is "eight million, seven hundred forty-two thousand, four hundred thirty-two".