7428750 has 80 divisors (see below), whose sum is σ = 21293184. Its totient is φ = 1692000.

The previous prime is 7428737. The next prime is 7428761. The reversal of 7428750 is 578247.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26109 + ... + 26391.

Almost surely, 2^7428750 is an apocalyptic number.

7428750 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7428750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10646592).

7428750 is an abundant number, since it is smaller than the sum of its proper divisors (13864434).

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

7428750 is a wasteful number, since it uses less digits than its factorization.

7428750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 7428750 is about 2725.5733341813. The cubic root of 7428750 is about 195.1215547185.

The spelling of 7428750 in words is "seven million, four hundred twenty-eight thousand, seven hundred fifty".