28876137 has 8 divisors (see below), whose sum is σ = 38732736. Its totient is φ = 19135152.

The previous prime is 28876121. The next prime is 28876151. The reversal of 28876137 is 73167882.

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

It is not a de Polignac number, because 28876137 - 2⁴ = 28876121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28876157) 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, 28318 + ... + 29319.

It is an arithmetic number, because the mean of its divisors is an integer number (4841592).

Almost surely, 2^28876137 is an apocalyptic number.

It is an amenable number.

28876137 is a deficient number, since it is larger than the sum of its proper divisors (9856599).

28876137 is a wasteful number, since it uses less digits than its factorization.

28876137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57807.

The product of its digits is 112896, while the sum is 42.

The square root of 28876137 is about 5373.6521100644. The cubic root of 28876137 is about 306.7936487100.

The spelling of 28876137 in words is "twenty-eight million, eight hundred seventy-six thousand, one hundred thirty-seven".