27970357 has 2 divisors, whose sum is σ = 27970358. Its totient is φ = 27970356.

The previous prime is 27970343. The next prime is 27970363. The reversal of 27970357 is 75307972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27941796 + 28561 = 5286^2 + 169^2 .

It is a cyclic number.

It is not a de Polignac number, because 27970357 - 2¹⁵ = 27937589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27971357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13985178 + 13985179.

It is an arithmetic number, because the mean of its divisors is an integer number (13985179).

Almost surely, 2^27970357 is an apocalyptic number.

It is an amenable number.

27970357 is a deficient number, since it is larger than the sum of its proper divisors (1).

27970357 is an equidigital number, since it uses as much as digits as its factorization.

27970357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 92610, while the sum is 40.

The square root of 27970357 is about 5288.7008801784. The cubic root of 27970357 is about 303.5517002938.

The spelling of 27970357 in words is "twenty-seven million, nine hundred seventy thousand, three hundred fifty-seven".