9121788 has 96 divisors (see below), whose sum is σ = 26107200. Its totient is φ = 2737152.

The previous prime is 9121787. The next prime is 9121799. The reversal of 9121788 is 8871219.

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 not an unprimeable number, because it can be changed into a prime (9121787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102448 + ... + 102536.

It is an arithmetic number, because the mean of its divisors is an integer number (271950).

Almost surely, 2^9121788 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 9121788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13053600).

9121788 is an abundant number, since it is smaller than the sum of its proper divisors (16985412).

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

9121788 is a wasteful number, since it uses less digits than its factorization.

9121788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 180 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 9121788 is about 3020.2297925820. The cubic root of 9121788 is about 208.9424381517.

The spelling of 9121788 in words is "nine million, one hundred twenty-one thousand, seven hundred eighty-eight".