28579039 has 2 divisors, whose sum is σ = 28579040. Its totient is φ = 28579038.

The previous prime is 28579027. The next prime is 28579043. The reversal of 28579039 is 93097582.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28579039 - 2¹³ = 28570847 is a prime.

It is a super-2 number, since 2×28579039² = 1633522940327042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28578986 and 28579004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28579079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14289519 + 14289520.

It is an arithmetic number, because the mean of its divisors is an integer number (14289520).

Almost surely, 2^28579039 is an apocalyptic number.

28579039 is a deficient number, since it is larger than the sum of its proper divisors (1).

28579039 is an equidigital number, since it uses as much as digits as its factorization.

28579039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 28579039 is about 5345.9366812561. The cubic root of 28579039 is about 305.7378498675.

It can be divided in two parts, 2 and 8579039, that added together give a square (8579041 = 2929²).

The spelling of 28579039 in words is "twenty-eight million, five hundred seventy-nine thousand, thirty-nine".