28938763 has 12 divisors (see below), whose sum is σ = 33755400. Its totient is φ = 24736992.

The previous prime is 28938719. The next prime is 28938769. The reversal of 28938763 is 36783982.

It is not a de Polignac number, because 28938763 - 2¹³ = 28930571 is a prime.

It is a super-3 number, since 3×28938763³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28938769) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27063 + ... + 28111.

It is an arithmetic number, because the mean of its divisors is an integer number (2812950).

Almost surely, 2^28938763 is an apocalyptic number.

28938763 is a deficient number, since it is larger than the sum of its proper divisors (4816637).

28938763 is a wasteful number, since it uses less digits than its factorization.

28938763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626 (or 1619 counting only the distinct ones).

The product of its digits is 435456, while the sum is 46.

The square root of 28938763 is about 5379.4760897322. The cubic root of 28938763 is about 307.0152779164.

The spelling of 28938763 in words is "twenty-eight million, nine hundred thirty-eight thousand, seven hundred sixty-three".