28607739 has 8 divisors (see below), whose sum is σ = 38168592. Its totient is φ = 19059360.

The previous prime is 28607737. The next prime is 28607773. The reversal of 28607739 is 93770682.

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

It is not a de Polignac number, because 28607739 - 2¹ = 28607737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28607739.

It is not an unprimeable number, because it can be changed into a prime (28607737) 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, 6309 + ... + 9849.

It is an arithmetic number, because the mean of its divisors is an integer number (4771074).

Almost surely, 2^28607739 is an apocalyptic number.

28607739 is a deficient number, since it is larger than the sum of its proper divisors (9560853).

28607739 is a wasteful number, since it uses less digits than its factorization.

28607739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6237.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 28607739 is about 5348.6202893830. The cubic root of 28607739 is about 305.8401595901.

The spelling of 28607739 in words is "twenty-eight million, six hundred seven thousand, seven hundred thirty-nine".