3996740 has 48 divisors (see below), whose sum is σ = 9422784. Its totient is φ = 1411200.

The previous prime is 3996653. The next prime is 3996743. The reversal of 3996740 is 476993.

It is a junction number, because it is equal to n+sod(n) for n = 3996694 and 3996703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3996743) 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, 7895 + ... + 8385.

It is an arithmetic number, because the mean of its divisors is an integer number (196308).

Almost surely, 2^3996740 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 3996740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4711392).

3996740 is an abundant number, since it is smaller than the sum of its proper divisors (5426044).

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

3996740 is a wasteful number, since it uses less digits than its factorization.

3996740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548 (or 546 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 3996740 is about 1999.1848338760. The cubic root of 3996740 is about 158.6969690808.

The spelling of 3996740 in words is "three million, nine hundred ninety-six thousand, seven hundred forty".