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28999037 is a prime number
BaseRepresentation
bin110111010011…
…1110101111101
32000120022012102
41232213311331
524410432122
62513314445
7501326204
oct156476575
960508172
1028999037
1115407451
129865a25
1360144c2
143bcc23b
15282c492
hex1ba7d7d

28999037 has 2 divisors, whose sum is σ = 28999038. Its totient is φ = 28999036.

The previous prime is 28999001. The next prime is 28999051. The reversal of 28999037 is 73099982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24393721 + 4605316 = 4939^2 + 2146^2 .

It is a cyclic number.

It is not a de Polignac number, because 28999037 - 216 = 28933501 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 28998982 and 28999000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28999057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14499518 + 14499519.

It is an arithmetic number, because the mean of its divisors is an integer number (14499519).

Almost surely, 228999037 is an apocalyptic number.

It is an amenable number.

28999037 is a deficient number, since it is larger than the sum of its proper divisors (1).

28999037 is an equidigital number, since it uses as much as digits as its factorization.

28999037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 28999037 is about 5385.0753940869. The cubic root of 28999037 is about 307.2282817940.

The spelling of 28999037 in words is "twenty-eight million, nine hundred ninety-nine thousand, thirty-seven".