28980739 has 2 divisors, whose sum is σ = 28980740. Its totient is φ = 28980738.

The previous prime is 28980703. The next prime is 28980761. The reversal of 28980739 is 93708982.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28980739 - 2¹³ = 28972547 is a prime.

It is a super-2 number, since 2×28980739² = 1679766465972242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28980769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14490369 + 14490370.

It is an arithmetic number, because the mean of its divisors is an integer number (14490370).

Almost surely, 2^28980739 is an apocalyptic number.

28980739 is a deficient number, since it is larger than the sum of its proper divisors (1).

28980739 is an equidigital number, since it uses as much as digits as its factorization.

28980739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 28980739 is about 5383.3761711402. The cubic root of 28980739 is about 307.1636492350.

The spelling of 28980739 in words is "twenty-eight million, nine hundred eighty thousand, seven hundred thirty-nine".