1972798 has 8 divisors (see below), whose sum is σ = 2968992. Its totient is φ = 983136.

The previous prime is 1972787. The next prime is 1972807. The reversal of 1972798 is 8972791.

It is a happy number.

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

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, 790 + ... + 2137.

It is an arithmetic number, because the mean of its divisors is an integer number (371124).

2^1972798 is an apocalyptic number.

1972798 is a deficient number, since it is larger than the sum of its proper divisors (996194).

1972798 is a wasteful number, since it uses less digits than its factorization.

1972798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3266.

The product of its digits is 63504, while the sum is 43.

The square root of 1972798 is about 1404.5632773215. The cubic root of 1972798 is about 125.4182893773.

Adding to 1972798 its product of digits (63504), we get a palindrome (2036302).

The spelling of 1972798 in words is "one million, nine hundred seventy-two thousand, seven hundred ninety-eight".