1867872 has 24 divisors (see below), whose sum is σ = 4903416. Its totient is φ = 622592.

The previous prime is 1867867. The next prime is 1867883. The reversal of 1867872 is 2787681.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1867872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9633 + ... + 9824.

It is an arithmetic number, because the mean of its divisors is an integer number (204309).

2^1867872 is an apocalyptic number.

1867872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1867872 is an abundant number, since it is smaller than the sum of its proper divisors (3035544).

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

1867872 is a wasteful number, since it uses less digits than its factorization.

1867872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19470 (or 19462 counting only the distinct ones).

The product of its digits is 37632, while the sum is 39.

The square root of 1867872 is about 1366.7011377767. The cubic root of 1867872 is about 123.1541460886.

The spelling of 1867872 in words is "one million, eight hundred sixty-seven thousand, eight hundred seventy-two".