1856772 has 18 divisors (see below), whose sum is σ = 4693598. Its totient is φ = 618912.

The previous prime is 1856759. The next prime is 1856773. The reversal of 1856772 is 2776581.

It can be written as a sum of positive squares in only one way, i.e., 1602756 + 254016 = 1266^2 + 504^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 51577 = 1856772 / (1 + 8 + 5 + 6 + 7 + 7 + 2).

It is not an unprimeable number, because it can be changed into a prime (1856773) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25753 + ... + 25824.

2^1856772 is an apocalyptic number.

1856772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1856772 is an abundant number, since it is smaller than the sum of its proper divisors (2836826).

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

1856772 is a wasteful number, since it uses less digits than its factorization.

1856772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51587 (or 51582 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 1856772 is about 1362.6342135731. The cubic root of 1856772 is about 122.9097096640.

It can be divided in two parts, 1856 and 772, that added together give a triangular number (2628 = T₇₂).

The spelling of 1856772 in words is "one million, eight hundred fifty-six thousand, seven hundred seventy-two".