28952709 has 8 divisors (see below), whose sum is σ = 38798400. Its totient is φ = 19204416.

The previous prime is 28952669. The next prime is 28952711. The reversal of 28952709 is 90725982.

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

It is not a de Polignac number, because 28952709 - 2¹² = 28948613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28952719) 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, 23652 + ... + 24845.

It is an arithmetic number, because the mean of its divisors is an integer number (4849800).

Almost surely, 2^28952709 is an apocalyptic number.

It is an amenable number.

28952709 is a deficient number, since it is larger than the sum of its proper divisors (9845691).

28952709 is a wasteful number, since it uses less digits than its factorization.

28952709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48699.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 28952709 is about 5380.7721564846. The cubic root of 28952709 is about 307.0645883339.

The spelling of 28952709 in words is "twenty-eight million, nine hundred fifty-two thousand, seven hundred nine".