1291652 has 12 divisors (see below), whose sum is σ = 2284380. Its totient is φ = 638976.

The previous prime is 1291637. The next prime is 1291669. The reversal of 1291652 is 2561921.

It can be written as a sum of positive squares in 2 ways, for example, as 541696 + 749956 = 736^2 + 866^2 .

It is an Ulam 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, 1277 + ... + 2052.

It is an arithmetic number, because the mean of its divisors is an integer number (190365).

2^1291652 is an apocalyptic number.

It is an amenable number.

1291652 is a deficient number, since it is larger than the sum of its proper divisors (992728).

1291652 is a wasteful number, since it uses less digits than its factorization.

1291652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3430 (or 3428 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 1291652 is about 1136.5086889241. The cubic root of 1291652 is about 108.9051724148.

The spelling of 1291652 in words is "one million, two hundred ninety-one thousand, six hundred fifty-two".