3897810 has 96 divisors (see below), whose sum is σ = 12130560. Its totient is φ = 849024.

The previous prime is 3897799. The next prime is 3897823. The reversal of 3897810 is 187983.

It is a super-2 number, since 2×3897810² = 30385845592200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14356 + ... + 14624.

It is an arithmetic number, because the mean of its divisors is an integer number (126360).

Almost surely, 2^3897810 is an apocalyptic number.

3897810 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 3897810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6065280).

3897810 is an abundant number, since it is smaller than the sum of its proper divisors (8232750).

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

3897810 is a wasteful number, since it uses less digits than its factorization.

3897810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 309 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 3897810 is about 1974.2872131481. The cubic root of 3897810 is about 157.3766229550.

The spelling of 3897810 in words is "three million, eight hundred ninety-seven thousand, eight hundred ten".