10556780 has 48 divisors (see below), whose sum is σ = 25142880. Its totient is φ = 3691008.

The previous prime is 10556773. The next prime is 10556797. The reversal of 10556780 is 8765501.

It is a super-2 number, since 2×10556780² = 222891207936800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3872 + ... + 6008.

It is an arithmetic number, because the mean of its divisors is an integer number (523810).

Almost surely, 2^10556780 is an apocalyptic number.

10556780 is a gapful number since it is divisible by the number (10) 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 10556780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12571440).

10556780 is an abundant number, since it is smaller than the sum of its proper divisors (14586100).

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

10556780 is a wasteful number, since it uses less digits than its factorization.

10556780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2178 (or 2176 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 10556780 is about 3249.1198808293. The cubic root of 10556780 is about 219.3699604906.

The spelling of 10556780 in words is "ten million, five hundred fifty-six thousand, seven hundred eighty".