18428750 has 40 divisors (see below), whose sum is σ = 36100944. Its totient is φ = 7040000.

The previous prime is 18428749. The next prime is 18428783. The reversal of 18428750 is 5782481.

It is a self number, because there is not a number n which added to its sum of digits gives 18428750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 28430 + ... + 29070.

Almost surely, 2^18428750 is an apocalyptic number.

18428750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18428750 is a deficient number, since it is larger than the sum of its proper divisors (17672194).

18428750 is an equidigital number, since it uses as much as digits as its factorization.

18428750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686 (or 671 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 18428750 is about 4292.8719990235. The cubic root of 18428750 is about 264.1386534441.

It can be divided in two parts, 184 and 28750, that multiplied together give a square (5290000 = 2300²).

The spelling of 18428750 in words is "eighteen million, four hundred twenty-eight thousand, seven hundred fifty".