1872396 has 30 divisors (see below), whose sum is σ = 4895660. Its totient is φ = 624024.

The previous prime is 1872389. The next prime is 1872419. The reversal of 1872396 is 6932781.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1872396.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2566 + ... + 3213.

2^1872396 is an apocalyptic number.

It is an amenable number.

1872396 is an abundant number, since it is smaller than the sum of its proper divisors (3023264).

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

1872396 is a wasteful number, since it uses less digits than its factorization.

1872396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5795 (or 5784 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 1872396 is about 1368.3552170398. The cubic root of 1872396 is about 123.2534926809.

Adding to 1872396 its product of digits (18144), we get a triangular number (1890540 = T₁₉₄₄).

The spelling of 1872396 in words is "one million, eight hundred seventy-two thousand, three hundred ninety-six".