8920780 has 96 divisors (see below), whose sum is σ = 22353408. Its totient is φ = 2956800.

The previous prime is 8920771. The next prime is 8920783. The reversal of 8920780 is 870298.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8920783) 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, 207439 + ... + 207481.

It is an arithmetic number, because the mean of its divisors is an integer number (232848).

Almost surely, 2^8920780 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 8920780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11176704).

8920780 is an abundant number, since it is smaller than the sum of its proper divisors (13432628).

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

8920780 is a wasteful number, since it uses less digits than its factorization.

8920780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 8920780 is about 2986.7674834175. The cubic root of 8920780 is about 207.3962707944.

The spelling of 8920780 in words is "eight million, nine hundred twenty thousand, seven hundred eighty".