3898280 has 32 divisors (see below), whose sum is σ = 8988840. Its totient is φ = 1520640.

The previous prime is 3898243. The next prime is 3898291. The reversal of 3898280 is 828983.

It can be written as a sum of positive squares in 4 ways, for example, as 1898884 + 1999396 = 1378^2 + 1414^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 452 + ... + 2828.

Almost surely, 2^3898280 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 3898280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4494420).

3898280 is an abundant number, since it is smaller than the sum of its proper divisors (5090560).

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

3898280 is a wasteful number, since it uses less digits than its factorization.

3898280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2429 (or 2425 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 3898280 is about 1974.4062398605. The cubic root of 3898280 is about 157.3829482197.

The spelling of 3898280 in words is "three million, eight hundred ninety-eight thousand, two hundred eighty".