7872732 has 54 divisors (see below), whose sum is σ = 23154768. Its totient is φ = 2248848.

The previous prime is 7872731. The next prime is 7872757. The reversal of 7872732 is 2372787.

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

It is a d-powerful number, because it can be written as 7² + 8 + 7³ + 2¹³ + 7⁸ + 3⁷ + 2²¹ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7872731) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 468 + ... + 3995.

It is an arithmetic number, because the mean of its divisors is an integer number (428792).

Almost surely, 2^7872732 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 7872732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11577384).

7872732 is an abundant number, since it is smaller than the sum of its proper divisors (15282036).

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

7872732 is a wasteful number, since it uses less digits than its factorization.

7872732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4487 (or 4475 counting only the distinct ones).

The product of its digits is 32928, while the sum is 36.

The square root of 7872732 is about 2805.8389119834. The cubic root of 7872732 is about 198.9337590864.

Subtracting from 7872732 its reverse (2372787), we obtain a palindrome (5499945).

The spelling of 7872732 in words is "seven million, eight hundred seventy-two thousand, seven hundred thirty-two".