1881872 has 10 divisors (see below), whose sum is σ = 3646158. Its totient is φ = 940928.

The previous prime is 1881863. The next prime is 1881881. The reversal of 1881872 is 2781881.

It is an interprime number because it is at equal distance from previous prime (1881863) and next prime (1881881).

It can be written as a sum of positive squares in only one way, i.e., 952576 + 929296 = 976^2 + 964^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58793 + ... + 58824.

2^1881872 is an apocalyptic number.

It is an amenable number.

1881872 is a deficient number, since it is larger than the sum of its proper divisors (1764286).

1881872 is a wasteful number, since it uses less digits than its factorization.

1881872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117625 (or 117619 counting only the distinct ones).

The product of its digits is 7168, while the sum is 35.

The square root of 1881872 is about 1371.8133983892. The cubic root of 1881872 is about 123.4610672408.

Subtracting 1881872 from its reverse (2781881), we obtain a palindrome (900009).

It can be divided in two parts, 18818 and 72, that multiplied together give a square (1354896 = 1164²).

The spelling of 1881872 in words is "one million, eight hundred eighty-one thousand, eight hundred seventy-two".