28977015 has 8 divisors (see below), whose sum is σ = 46363248. Its totient is φ = 15454400.

The previous prime is 28976977. The next prime is 28977023. The reversal of 28977015 is 51077982.

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

It is not a de Polignac number, because 28977015 - 2⁹ = 28976503 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965886 + ... + 965915.

It is an arithmetic number, because the mean of its divisors is an integer number (5795406).

Almost surely, 2^28977015 is an apocalyptic number.

28977015 is a deficient number, since it is larger than the sum of its proper divisors (17386233).

28977015 is a wasteful number, since it uses less digits than its factorization.

28977015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1931809.

The product of its (nonzero) digits is 35280, while the sum is 39.

The square root of 28977015 is about 5383.0302804276. The cubic root of 28977015 is about 307.1504919166.

The spelling of 28977015 in words is "twenty-eight million, nine hundred seventy-seven thousand, fifteen".