28796457 has 8 divisors (see below), whose sum is σ = 40416160. Its totient is φ = 18187200.

The previous prime is 28796447. The next prime is 28796461. The reversal of 28796457 is 75469782.

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

It is a de Polignac number, because none of the positive numbers 2^k-28796457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28796447) 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, 252544 + ... + 252657.

It is an arithmetic number, because the mean of its divisors is an integer number (5052020).

Almost surely, 2^28796457 is an apocalyptic number.

It is an amenable number.

28796457 is a deficient number, since it is larger than the sum of its proper divisors (11619703).

28796457 is a wasteful number, since it uses less digits than its factorization.

28796457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505223.

The product of its digits is 846720, while the sum is 48.

The square root of 28796457 is about 5366.2330363114. The cubic root of 28796457 is about 306.5112028386.

The spelling of 28796457 in words is "twenty-eight million, seven hundred ninety-six thousand, four hundred fifty-seven".