3997512 has 80 divisors (see below), whose sum is σ = 11616000. Its totient is φ = 1283040.

The previous prime is 3997507. The next prime is 3997547. The reversal of 3997512 is 2157993.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19989 + ... + 20187.

It is an arithmetic number, because the mean of its divisors is an integer number (145200).

Almost surely, 2^3997512 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 3997512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5808000).

3997512 is an abundant number, since it is smaller than the sum of its proper divisors (7618488).

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

3997512 is a wasteful number, since it uses less digits than its factorization.

3997512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248 (or 235 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 3997512 is about 1999.3779032489. The cubic root of 3997512 is about 158.7071862555.

The spelling of 3997512 in words is "three million, nine hundred ninety-seven thousand, five hundred twelve".