1972737 has 18 divisors (see below), whose sum is σ = 3087942. Its totient is φ = 1213056.

The previous prime is 1972721. The next prime is 1972739. The reversal of 1972737 is 7372791.

It can be written as a sum of positive squares in 3 ways, for example, as 254016 + 1718721 = 504^2 + 1311^2 .

It is not a de Polignac number, because 1972737 - 2⁴ = 1972721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1972739) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 873 + ... + 2169.

2^1972737 is an apocalyptic number.

It is an amenable number.

1972737 is a deficient number, since it is larger than the sum of its proper divisors (1115205).

1972737 is a wasteful number, since it uses less digits than its factorization.

1972737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1313 counting only the distinct ones).

The product of its digits is 18522, while the sum is 36.

The square root of 1972737 is about 1404.5415622188. The cubic root of 1972737 is about 125.4169966965.

The spelling of 1972737 in words is "one million, nine hundred seventy-two thousand, seven hundred thirty-seven".