1971152 has 20 divisors (see below), whose sum is σ = 3840900. Its totient is φ = 979968.

The previous prime is 1971149. The next prime is 1971161. The reversal of 1971152 is 2511791.

It can be written as a sum of positive squares in 2 ways, for example, as 1132096 + 839056 = 1064^2 + 916^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5408 + ... + 5760.

It is an arithmetic number, because the mean of its divisors is an integer number (192045).

2^1971152 is an apocalyptic number.

It is an amenable number.

1971152 is a deficient number, since it is larger than the sum of its proper divisors (1869748).

1971152 is a wasteful number, since it uses less digits than its factorization.

1971152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710 (or 704 counting only the distinct ones).

The product of its digits is 630, while the sum is 26.

The square root of 1971152 is about 1403.9772077922. The cubic root of 1971152 is about 125.3833988403.

The spelling of 1971152 in words is "one million, nine hundred seventy-one thousand, one hundred fifty-two".