1866248 has 16 divisors (see below), whose sum is σ = 3516480. Its totient is φ = 928528.

The previous prime is 1866247. The next prime is 1866251. The reversal of 1866248 is 8426681.

Its product of digits (18432) is a multiple of the sum of its prime divisors (1152).

It is not an unprimeable number, because it can be changed into a prime (1866247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1661 + ... + 2547.

It is an arithmetic number, because the mean of its divisors is an integer number (219780).

2^1866248 is an apocalyptic number.

It is an amenable number.

1866248 is a deficient number, since it is larger than the sum of its proper divisors (1650232).

1866248 is a wasteful number, since it uses less digits than its factorization.

1866248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156 (or 1152 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 1866248 is about 1366.1068772245. The cubic root of 1866248 is about 123.1184440839.

It can be divided in two parts, 18 and 66248, that multiplied together give a square (1192464 = 1092²).

The spelling of 1866248 in words is "one million, eight hundred sixty-six thousand, two hundred forty-eight".