7728501 has 8 divisors (see below), whose sum is σ = 11241504. Its totient is φ = 4683920.

The previous prime is 7728463. The next prime is 7728527. The reversal of 7728501 is 1058277.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7728501 - 2⁷ = 7728373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7728551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117066 + ... + 117131.

It is an arithmetic number, because the mean of its divisors is an integer number (1405188).

Almost surely, 2^7728501 is an apocalyptic number.

It is an amenable number.

7728501 is a deficient number, since it is larger than the sum of its proper divisors (3513003).

7728501 is a wasteful number, since it uses less digits than its factorization.

7728501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 234211.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 7728501 is about 2780.0181654083. The cubic root of 7728501 is about 197.7114202355.

The spelling of 7728501 in words is "seven million, seven hundred twenty-eight thousand, five hundred one".