28763877 has 8 divisors (see below), whose sum is σ = 39589120. Its totient is φ = 18557280.

The previous prime is 28763843. The next prime is 28763893. The reversal of 28763877 is 77836782.

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

It is not a de Polignac number, because 28763877 - 2¹¹ = 28761829 is a prime.

It is a super-2 number, since 2×28763877² = 1654721240142258, 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 (28763807) 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, 154552 + ... + 154737.

It is an arithmetic number, because the mean of its divisors is an integer number (4948640).

Almost surely, 2^28763877 is an apocalyptic number.

It is an amenable number.

28763877 is a deficient number, since it is larger than the sum of its proper divisors (10825243).

28763877 is a wasteful number, since it uses less digits than its factorization.

28763877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309323.

The product of its digits is 790272, while the sum is 48.

The square root of 28763877 is about 5363.1965281910. The cubic root of 28763877 is about 306.3955647305.

The spelling of 28763877 in words is "twenty-eight million, seven hundred sixty-three thousand, eight hundred seventy-seven".