28763949 has 8 divisors (see below), whose sum is σ = 40608000. Its totient is φ = 18047936.

The previous prime is 28763941. The next prime is 28763951. The reversal of 28763949 is 94936782.

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 28763949 - 2³ = 28763941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28763898 and 28763907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28763941) 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, 281949 + ... + 282050.

It is an arithmetic number, because the mean of its divisors is an integer number (5076000).

Almost surely, 2^28763949 is an apocalyptic number.

It is an amenable number.

28763949 is a deficient number, since it is larger than the sum of its proper divisors (11844051).

28763949 is a wasteful number, since it uses less digits than its factorization.

28763949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564019.

The product of its digits is 653184, while the sum is 48.

The square root of 28763949 is about 5363.2032406016. The cubic root of 28763949 is about 306.3958203806.

The spelling of 28763949 in words is "twenty-eight million, seven hundred sixty-three thousand, nine hundred forty-nine".