1887264 has 36 divisors (see below), whose sum is σ = 5367726. Its totient is φ = 628992.

The previous prime is 1887253. The next prime is 1887283. The reversal of 1887264 is 4627881.

It can be written as a sum of positive squares in only one way, i.e., 1710864 + 176400 = 1308^2 + 420^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2989 + ... + 3564.

2^1887264 is an apocalyptic number.

It is an amenable number.

1887264 is an abundant number, since it is smaller than the sum of its proper divisors (3480462).

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

1887264 is a wasteful number, since it uses less digits than its factorization.

1887264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6569 (or 6558 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 1887264 is about 1373.7772745245. Note that the first 3 decimals coincide. The cubic root of 1887264 is about 123.5788696715.

The spelling of 1887264 in words is "one million, eight hundred eighty-seven thousand, two hundred sixty-four".