3897280 has 56 divisors (see below), whose sum is σ = 9784080. Its totient is φ = 1474560.

The previous prime is 3897269. The next prime is 3897331. The reversal of 3897280 is 827983.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5760 + ... + 6400.

Almost surely, 2^3897280 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 3897280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4892040).

3897280 is an abundant number, since it is smaller than the sum of its proper divisors (5886800).

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

3897280 is a wasteful number, since it uses less digits than its factorization.

3897280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677 (or 667 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 3897280 is about 1974.1529829271. The cubic root of 3897280 is about 157.3694895997.

The spelling of 3897280 in words is "three million, eight hundred ninety-seven thousand, two hundred eighty".