18428370 has 16 divisors (see below), whose sum is σ = 44228160. Its totient is φ = 4914224.

The previous prime is 18428341. The next prime is 18428413. The reversal of 18428370 is 7382481.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307110 + ... + 307169.

It is an arithmetic number, because the mean of its divisors is an integer number (2764260).

Almost surely, 2^18428370 is an apocalyptic number.

18428370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18428370 is an abundant number, since it is smaller than the sum of its proper divisors (25799790).

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

18428370 is a wasteful number, since it uses less digits than its factorization.

18428370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614289.

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 18428370 is about 4292.8277393811. The cubic root of 18428370 is about 264.1368379225.

The spelling of 18428370 in words is "eighteen million, four hundred twenty-eight thousand, three hundred seventy".