1871904 has 96 divisors (see below), whose sum is σ = 5515776. Its totient is φ = 552960.

The previous prime is 1871879. The next prime is 1871917. The reversal of 1871904 is 4091781.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50574 + ... + 50610.

It is an arithmetic number, because the mean of its divisors is an integer number (57456).

2^1871904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1871904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2757888).

1871904 is an abundant number, since it is smaller than the sum of its proper divisors (3643872).

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

1871904 is a wasteful number, since it uses less digits than its factorization.

1871904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 90 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 1871904 is about 1368.1754273484. The cubic root of 1871904 is about 123.2426961702.

It can be divided in two parts, 1871 and 904, that added together give a triangular number (2775 = T₇₄).

The spelling of 1871904 in words is "one million, eight hundred seventy-one thousand, nine hundred four".