10401780 has 48 divisors (see below), whose sum is σ = 29683584. Its totient is φ = 2720640.

The previous prime is 10401757. The next prime is 10401799. The reversal of 10401780 is 8710401.

It is a congruent number.

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, 1545 + ... + 4815.

It is an arithmetic number, because the mean of its divisors is an integer number (618408).

Almost surely, 2^10401780 is an apocalyptic number.

10401780 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 10401780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14841792).

10401780 is an abundant number, since it is smaller than the sum of its proper divisors (19281804).

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

10401780 is a wasteful number, since it uses less digits than its factorization.

10401780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336 (or 3334 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 10401780 is about 3225.1790647962. The cubic root of 10401780 is about 218.2910289745.

The spelling of 10401780 in words is "ten million, four hundred one thousand, seven hundred eighty".