3898734 has 48 divisors (see below), whose sum is σ = 9234000. Its totient is φ = 1094016.

The previous prime is 3898717. The next prime is 3898747. The reversal of 3898734 is 4378983.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26092 + ... + 26240.

It is an arithmetic number, because the mean of its divisors is an integer number (192375).

Almost surely, 2^3898734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3898734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4617000).

3898734 is an abundant number, since it is smaller than the sum of its proper divisors (5335266).

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

3898734 is a wasteful number, since it uses less digits than its factorization.

3898734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 250 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 3898734 is about 1974.5212077868. The cubic root of 3898734 is about 157.3890576735.

Subtracting 3898734 from its reverse (4378983), we obtain a square (480249 = 693²).

The spelling of 3898734 in words is "three million, eight hundred ninety-eight thousand, seven hundred thirty-four".