28877641 has 8 divisors (see below), whose sum is σ = 31345664. Its totient is φ = 26444880.

The previous prime is 28877593. The next prime is 28877657. The reversal of 28877641 is 14677882.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28877641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28877041) 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, 7095 + ... + 10396.

It is an arithmetic number, because the mean of its divisors is an integer number (3918208).

Almost surely, 2^28877641 is an apocalyptic number.

It is an amenable number.

28877641 is a deficient number, since it is larger than the sum of its proper divisors (2468023).

28877641 is a wasteful number, since it uses less digits than its factorization.

28877641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17631.

The product of its digits is 150528, while the sum is 43.

The square root of 28877641 is about 5373.7920503123. The cubic root of 28877641 is about 306.7989750185.

The spelling of 28877641 in words is "twenty-eight million, eight hundred seventy-seven thousand, six hundred forty-one".