28583139 has 12 divisors (see below), whose sum is σ = 41268696. Its totient is φ = 17589312.

The previous prime is 28583131. The next prime is 28583141. The reversal of 28583139 is 93138582.

It is not a de Polignac number, because 28583139 - 2³ = 28583131 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 28583097 and 28583106.

It is not an unprimeable number, because it can be changed into a prime (28583131) 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, 27682 + ... + 28695.

It is an arithmetic number, because the mean of its divisors is an integer number (3439058).

Almost surely, 2^28583139 is an apocalyptic number.

28583139 is a deficient number, since it is larger than the sum of its proper divisors (12685557).

28583139 is a wasteful number, since it uses less digits than its factorization.

28583139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56406 (or 56393 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 28583139 is about 5346.3201363181. The cubic root of 28583139 is about 305.7524697345.

The spelling of 28583139 in words is "twenty-eight million, five hundred eighty-three thousand, one hundred thirty-nine".