4197780 has 36 divisors (see below), whose sum is σ = 12733812. Its totient is φ = 1119360.

The previous prime is 4197769. The next prime is 4197797. The reversal of 4197780 is 877914.

It can be written as a sum of positive squares in 2 ways, for example, as 1726596 + 2471184 = 1314^2 + 1572^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11481 + ... + 11840.

It is an arithmetic number, because the mean of its divisors is an integer number (353717).

Almost surely, 2^4197780 is an apocalyptic number.

It is an amenable number.

4197780 is an abundant number, since it is smaller than the sum of its proper divisors (8536032).

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

4197780 is a wasteful number, since it uses less digits than its factorization.

4197780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23336 (or 23331 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 4197780 is about 2048.8484570607. The cubic root of 4197780 is about 161.3144325163.

The spelling of 4197780 in words is "four million, one hundred ninety-seven thousand, seven hundred eighty".