28877719 has 8 divisors (see below), whose sum is σ = 32451552. Its totient is φ = 25497120.

The previous prime is 28877711. The next prime is 28877729. The reversal of 28877719 is 91777882.

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 28877719 - 2³ = 28877711 is a prime.

It is a super-2 number, since 2×28877719² = 1667845309285922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28877711) 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, 47992 + ... + 48589.

It is an arithmetic number, because the mean of its divisors is an integer number (4056444).

Almost surely, 2^28877719 is an apocalyptic number.

28877719 is a deficient number, since it is larger than the sum of its proper divisors (3573833).

28877719 is a wasteful number, since it uses less digits than its factorization.

28877719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96617.

The product of its digits is 395136, while the sum is 49.

The square root of 28877719 is about 5373.7993077524. The cubic root of 28877719 is about 306.7992512449.

The spelling of 28877719 in words is "twenty-eight million, eight hundred seventy-seven thousand, seven hundred nineteen".