3897210 has 32 divisors (see below), whose sum is σ = 9608832. Its totient is φ = 1010880.

The previous prime is 3897209. The next prime is 3897217. The reversal of 3897210 is 127983.

3897210 = 272² + 273² + ... + 316².

It is a happy number.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3897217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646 + ... + 2865.

It is an arithmetic number, because the mean of its divisors is an integer number (300276).

Almost surely, 2^3897210 is an apocalyptic number.

3897210 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3897210 is an abundant number, since it is smaller than the sum of its proper divisors (5711622).

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

3897210 is a wasteful number, since it uses less digits than its factorization.

3897210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 3897210 is about 1974.1352537250. The cubic root of 3897210 is about 157.3685474101.

The spelling of 3897210 in words is "three million, eight hundred ninety-seven thousand, two hundred ten".