28262830 has 16 divisors (see below), whose sum is σ = 51378624. Its totient is φ = 11192800.

The previous prime is 28262809. The next prime is 28262831. The reversal of 28262830 is 3826282.

It is a junction number, because it is equal to n+sod(n) for n = 28262792 and 28262801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28262831) 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, 12982 + ... + 15001.

It is an arithmetic number, because the mean of its divisors is an integer number (3211164).

Almost surely, 2^28262830 is an apocalyptic number.

28262830 is a deficient number, since it is larger than the sum of its proper divisors (23115794).

28262830 is a wasteful number, since it uses less digits than its factorization.

28262830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28091.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 28262830 is about 5316.2797142363. The cubic root of 28262830 is about 304.6060667143.

It can be divided in two parts, 28262 and 830, that added together give a palindrome (29092).

The spelling of 28262830 in words is "twenty-eight million, two hundred sixty-two thousand, eight hundred thirty".