10081780 has 48 divisors (see below), whose sum is σ = 22841280. Its totient is φ = 3725568.

The previous prime is 10081759. The next prime is 10081781. The reversal of 10081780 is 8718001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10081781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16032 + ... + 16648.

It is an arithmetic number, because the mean of its divisors is an integer number (475860).

Almost surely, 2^10081780 is an apocalyptic number.

10081780 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 10081780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11420640).

10081780 is an abundant number, since it is smaller than the sum of its proper divisors (12759500).

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

10081780 is a wasteful number, since it uses less digits than its factorization.

10081780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 10081780 is about 3175.1818845540. The cubic root of 10081780 is about 216.0291741573.

Adding to 10081780 its reverse (8718001), we get a palindrome (18799781).

The spelling of 10081780 in words is "ten million, eighty-one thousand, seven hundred eighty".