9972036 has 72 divisors (see below), whose sum is σ = 27081600. Its totient is φ = 3084480.

The previous prime is 9972029. The next prime is 9972043. The reversal of 9972036 is 6302799.

It is an interprime number because it is at equal distance from previous prime (9972029) and next prime (9972043).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41605 + ... + 41843.

Almost surely, 2^9972036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9972036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13540800).

9972036 is an abundant number, since it is smaller than the sum of its proper divisors (17109564).

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

9972036 is a wasteful number, since it uses less digits than its factorization.

9972036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 9972036 is about 3157.8530681461. The cubic root of 9972036 is about 215.2424594800.

The spelling of 9972036 in words is "nine million, nine hundred seventy-two thousand, thirty-six".