28737479 has 2 divisors, whose sum is σ = 28737480. Its totient is φ = 28737478.

The previous prime is 28737451. The next prime is 28737503. The reversal of 28737479 is 97473782.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28737479 - 2⁸ = 28737223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28737979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14368739 + 14368740.

It is an arithmetic number, because the mean of its divisors is an integer number (14368740).

Almost surely, 2^28737479 is an apocalyptic number.

28737479 is a deficient number, since it is larger than the sum of its proper divisors (1).

28737479 is an equidigital number, since it uses as much as digits as its factorization.

28737479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 592704, while the sum is 47.

The square root of 28737479 is about 5360.7349309586. The cubic root of 28737479 is about 306.3018047029.

The spelling of 28737479 in words is "twenty-eight million, seven hundred thirty-seven thousand, four hundred seventy-nine".