4047012 has 36 divisors (see below), whose sum is σ = 10366720. Its totient is φ = 1330992.

The previous prime is 4046993. The next prime is 4047013. The reversal of 4047012 is 2107404.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×4047012² = 32756612256288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4047013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2133 + ... + 3555.

Almost surely, 2^4047012 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 4047012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5183360).

4047012 is an abundant number, since it is smaller than the sum of its proper divisors (6319708).

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

4047012 is a wasteful number, since it uses less digits than its factorization.

4047012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1512 (or 1507 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 4047012 is about 2011.7186682039. The cubic root of 4047012 is about 159.3595754392.

The spelling of 4047012 in words is "four million, forty-seven thousand, twelve".