997030156 has 12 divisors (see below), whose sum is σ = 1745867368. Its totient is φ = 498210912.

The previous prime is 997030147. The next prime is 997030163. The reversal of 997030156 is 651030799.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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, 68586 + ... + 81841.

Almost surely, 2^997030156 is an apocalyptic number.

It is an amenable number.

997030156 is a deficient number, since it is larger than the sum of its proper divisors (748837212).

997030156 is a wasteful number, since it uses less digits than its factorization.

997030156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152088 (or 152086 counting only the distinct ones).

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 997030156 is about 31575.7843291342. The cubic root of 997030156 is about 999.0090703828.

The spelling of 997030156 in words is "nine hundred ninety-seven million, thirty thousand, one hundred fifty-six".