9970156 has 12 divisors (see below), whose sum is σ = 19940368. Its totient is φ = 4272912.

The previous prime is 9970151. The next prime is 9970159. The reversal of 9970156 is 6510799.

9970156 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (9970151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178011 + ... + 178066.

Almost surely, 2^9970156 is an apocalyptic number.

It is an amenable number.

9970156 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9970156 is a wasteful number, since it uses less digits than its factorization.

9970156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356088 (or 356086 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 9970156 is about 3157.5553835206. Note that the first 3 decimals coincide. The cubic root of 9970156 is about 215.2289322773.

The spelling of 9970156 in words is "nine million, nine hundred seventy thousand, one hundred fifty-six".