4047732 has 90 divisors (see below), whose sum is σ = 11774994. Its totient is φ = 1205280.

The previous prime is 4047721. The next prime is 4047737. The reversal of 4047732 is 2377404.

It can be written as a sum of positive squares in only one way, i.e., 2802276 + 1245456 = 1674^2 + 1116^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 4047696 and 4047705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4047737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 130557 + ... + 130587.

Almost surely, 2^4047732 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 4047732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5887497).

4047732 is an abundant number, since it is smaller than the sum of its proper divisors (7727262).

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

4047732 is a wasteful number, since it uses less digits than its factorization.

4047732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91 (or 49 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 4047732 is about 2011.8976117089. The cubic root of 4047732 is about 159.3690253816.

The spelling of 4047732 in words is "four million, forty-seven thousand, seven hundred thirty-two".