1872312 has 64 divisors (see below), whose sum is σ = 5352480. Its totient is φ = 540672.

The previous prime is 1872301. The next prime is 1872313. The reversal of 1872312 is 2132781.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1872313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5128 + ... + 5480.

2^1872312 is an apocalyptic number.

1872312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1872312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2676240).

1872312 is an abundant number, since it is smaller than the sum of its proper divisors (3480168).

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

1872312 is a wasteful number, since it uses less digits than its factorization.

1872312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392 (or 388 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 1872312 is about 1368.3245229111. The cubic root of 1872312 is about 123.2516495081.

It can be divided in two parts, 18723 and 12, that multiplied together give a square (224676 = 474²).

The spelling of 1872312 in words is "one million, eight hundred seventy-two thousand, three hundred twelve".