1886940 has 72 divisors (see below), whose sum is σ = 6250608. Its totient is φ = 456960.

The previous prime is 1886923. The next prime is 1886957. The reversal of 1886940 is 496881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1886923) and next prime (1886957).

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

It is a junction number, because it is equal to n+sod(n) for n = 1886895 and 1886904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1504 + ... + 2456.

It is an arithmetic number, because the mean of its divisors is an integer number (86814).

2^1886940 is an apocalyptic number.

1886940 is a gapful number since it is divisible by the number (10) 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 1886940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3125304).

1886940 is an abundant number, since it is smaller than the sum of its proper divisors (4363668).

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

1886940 is a wasteful number, since it uses less digits than its factorization.

1886940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1886940 is about 1373.6593464174. The cubic root of 1886940 is about 123.5717973797.

The spelling of 1886940 in words is "one million, eight hundred eighty-six thousand, nine hundred forty".