9152820 has 36 divisors (see below), whose sum is σ = 27764100. Its totient is φ = 2440704.

The previous prime is 9152809. The next prime is 9152831. The reversal of 9152820 is 282519.

It is an interprime number because it is at equal distance from previous prime (9152809) and next prime (9152831).

It can be written as a sum of positive squares in 2 ways, for example, as 4717584 + 4435236 = 2172^2 + 2106^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×9152820² = 167548227904800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25245 + ... + 25604.

It is an arithmetic number, because the mean of its divisors is an integer number (771225).

Almost surely, 2^9152820 is an apocalyptic number.

9152820 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9152820 is an abundant number, since it is smaller than the sum of its proper divisors (18611280).

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

9152820 is a wasteful number, since it uses less digits than its factorization.

9152820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50864 (or 50859 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 9152820 is about 3025.3627881628. The cubic root of 9152820 is about 209.1791082335.

The spelling of 9152820 in words is "nine million, one hundred fifty-two thousand, eight hundred twenty".