10251780 has 144 divisors (see below), whose sum is σ = 36542016. Its totient is φ = 2123520.

The previous prime is 10251779. The next prime is 10251797. The reversal of 10251780 is 8715201.

It is a self number, because there is not a number n which added to its sum of digits gives 10251780.

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, 32182 + ... + 32498.

It is an arithmetic number, because the mean of its divisors is an integer number (253764).

Almost surely, 2^10251780 is an apocalyptic number.

10251780 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 10251780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18271008).

10251780 is an abundant number, since it is smaller than the sum of its proper divisors (26290236).

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

10251780 is a wasteful number, since it uses less digits than its factorization.

10251780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 10251780 is about 3201.8400959448. The cubic root of 10251780 is about 217.2366478322.

Adding to 10251780 its reverse (8715201), we get a palindrome (18966981).

The spelling of 10251780 in words is "ten million, two hundred fifty-one thousand, seven hundred eighty".