9020172 has 48 divisors (see below), whose sum is σ = 24399872. Its totient is φ = 2540160.

The previous prime is 9020159. The next prime is 9020173. The reversal of 9020172 is 2710209.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (9020173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5397 + ... + 6867.

Almost surely, 2^9020172 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 9020172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12199936).

9020172 is an abundant number, since it is smaller than the sum of its proper divisors (15379700).

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

9020172 is a wasteful number, since it uses less digits than its factorization.

9020172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558 (or 1556 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 9020172 is about 3003.3601182675. The cubic root of 9020172 is about 208.1636717181.

The spelling of 9020172 in words is "nine million, twenty thousand, one hundred seventy-two".