28976457 has 8 divisors (see below), whose sum is σ = 38711520. Its totient is φ = 19279520.

The previous prime is 28976443. The next prime is 28976461. The reversal of 28976457 is 75467982.

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 28976457 - 2⁷ = 28976329 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28976417) 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, 7707 + ... + 10832.

It is an arithmetic number, because the mean of its divisors is an integer number (4838940).

Almost surely, 2^28976457 is an apocalyptic number.

It is an amenable number.

28976457 is a deficient number, since it is larger than the sum of its proper divisors (9735063).

28976457 is a wasteful number, since it uses less digits than its factorization.

28976457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19063.

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

The square root of 28976457 is about 5382.9784506349. The cubic root of 28976457 is about 307.1485203416.

The spelling of 28976457 in words is "twenty-eight million, nine hundred seventy-six thousand, four hundred fifty-seven".