9012780 has 144 divisors (see below), whose sum is σ = 32707584. Its totient is φ = 1964160.

The previous prime is 9012769. The next prime is 9012791. The reversal of 9012780 is 872109.

It is an interprime number because it is at equal distance from previous prime (9012769) and next prime (9012791).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28825 + ... + 29135.

It is an arithmetic number, because the mean of its divisors is an integer number (227136).

Almost surely, 2^9012780 is an apocalyptic number.

9012780 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9012780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16353792).

9012780 is an abundant number, since it is smaller than the sum of its proper divisors (23694804).

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

9012780 is a wasteful number, since it uses less digits than its factorization.

9012780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 356 (or 351 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 27.

The square root of 9012780 is about 3002.1292443864. The cubic root of 9012780 is about 208.1067930398.

Adding to 9012780 its reverse (872109), we get a palindrome (9884889).

The spelling of 9012780 in words is "nine million, twelve thousand, seven hundred eighty".