28974037 has 2 divisors, whose sum is σ = 28974038. Its totient is φ = 28974036.

The previous prime is 28974019. The next prime is 28974041. The reversal of 28974037 is 73047982.

It is the 2198-th star number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28291761 + 682276 = 5319^2 + 826^2 .

It is a cyclic number.

It is not a de Polignac number, because 28974037 - 2¹⁹ = 28449749 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28974007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14487018 + 14487019.

It is an arithmetic number, because the mean of its divisors is an integer number (14487019).

Almost surely, 2^28974037 is an apocalyptic number.

It is an amenable number.

28974037 is a deficient number, since it is larger than the sum of its proper divisors (1).

28974037 is an equidigital number, since it uses as much as digits as its factorization.

28974037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 28974037 is about 5382.7536633214. The cubic root of 28974037 is about 307.1399694905.

The spelling of 28974037 in words is "twenty-eight million, nine hundred seventy-four thousand, thirty-seven".