997226872 has 16 divisors (see below), whose sum is σ = 1875895560. Its totient is φ = 496988064.

The previous prime is 997226827. The next prime is 997226873. The reversal of 997226872 is 278622799.

It is a super-2 number, since 2×997226872² = 1988922868477808768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997226873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200563 + ... + 205474.

Almost surely, 2^997226872 is an apocalyptic number.

It is an amenable number.

997226872 is a deficient number, since it is larger than the sum of its proper divisors (878668688).

997226872 is a wasteful number, since it uses less digits than its factorization.

997226872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406350 (or 406346 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 52.

The square root of 997226872 is about 31578.8991575071. The cubic root of 997226872 is about 999.0747682102.

The spelling of 997226872 in words is "nine hundred ninety-seven million, two hundred twenty-six thousand, eight hundred seventy-two".