7458864 has 80 divisors (see below), whose sum is σ = 22379520. Its totient is φ = 2096640.

The previous prime is 7458833. The next prime is 7458883. The reversal of 7458864 is 4688547.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26404 + ... + 26684.

It is an arithmetic number, because the mean of its divisors is an integer number (279744).

Almost surely, 2^7458864 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 7458864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11189760).

7458864 is an abundant number, since it is smaller than the sum of its proper divisors (14920656).

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

7458864 is a wasteful number, since it uses less digits than its factorization.

7458864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 372 counting only the distinct ones).

The product of its digits is 215040, while the sum is 42.

The square root of 7458864 is about 2731.0920892566. The cubic root of 7458864 is about 195.3848546730.

The spelling of 7458864 in words is "seven million, four hundred fifty-eight thousand, eight hundred sixty-four".