1873890 has 48 divisors (see below), whose sum is σ = 4987008. Its totient is φ = 487968.

The previous prime is 1873889. The next prime is 1873967. The reversal of 1873890 is 983781.

It is a super-2 number, since 2×1873890² = 7022927464200, which contains 22 as substring.

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, 4009 + ... + 4451.

It is an arithmetic number, because the mean of its divisors is an integer number (103896).

2^1873890 is an apocalyptic number.

1873890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1873890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2493504).

1873890 is an abundant number, since it is smaller than the sum of its proper divisors (3113118).

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

1873890 is a wasteful number, since it uses less digits than its factorization.

1873890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 1873890 is about 1368.9010190660. The cubic root of 1873890 is about 123.2862656207.

The spelling of 1873890 in words is "one million, eight hundred seventy-three thousand, eight hundred ninety".