5281780 has 48 divisors (see below), whose sum is σ = 13095936. Its totient is φ = 1751040.

The previous prime is 5281763. The next prime is 5281817. The reversal of 5281780 is 871825.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 3732 + ... + 4948.

It is an arithmetic number, because the mean of its divisors is an integer number (272832).

Almost surely, 2^5281780 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 5281780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6547968).

5281780 is an abundant number, since it is smaller than the sum of its proper divisors (7814156).

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

5281780 is a wasteful number, since it uses less digits than its factorization.

5281780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 5281780 is about 2298.2123487615. The cubic root of 5281780 is about 174.1513194609.

The spelling of 5281780 in words is "five million, two hundred eighty-one thousand, seven hundred eighty".