28763394 has 24 divisors (see below), whose sum is σ = 63233520. Its totient is φ = 8715960.

The previous prime is 28763377. The next prime is 28763417. The reversal of 28763394 is 49336782.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19084 + ... + 20535.

It is an arithmetic number, because the mean of its divisors is an integer number (2634730).

Almost surely, 2^28763394 is an apocalyptic number.

28763394 is an abundant number, since it is smaller than the sum of its proper divisors (34470126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28763394 is a wasteful number, since it uses less digits than its factorization.

28763394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39646 (or 39635 counting only the distinct ones).

The product of its digits is 217728, while the sum is 42.

The square root of 28763394 is about 5363.1514988857. The cubic root of 28763394 is about 306.3938497335.

The spelling of 28763394 in words is "twenty-eight million, seven hundred sixty-three thousand, three hundred ninety-four".