1972915 has 8 divisors (see below), whose sum is σ = 2705760. Its totient is φ = 1352832.

The previous prime is 1972913. The next prime is 1972921. The reversal of 1972915 is 5192791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1972915 - 2¹ = 1972913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1972913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28150 + ... + 28219.

It is an arithmetic number, because the mean of its divisors is an integer number (338220).

2^1972915 is an apocalyptic number.

1972915 is a deficient number, since it is larger than the sum of its proper divisors (732845).

1972915 is an equidigital number, since it uses as much as digits as its factorization.

1972915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56381.

The product of its digits is 5670, while the sum is 34.

The square root of 1972915 is about 1404.6049266609. The cubic root of 1972915 is about 125.4207687070.

The spelling of 1972915 in words is "one million, nine hundred seventy-two thousand, nine hundred fifteen".