28740451 has 2 divisors, whose sum is σ = 28740452. Its totient is φ = 28740450.

The previous prime is 28740433. The next prime is 28740497. The reversal of 28740451 is 15404782.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28740451 - 2¹¹ = 28738403 is a prime.

It is not a weakly prime, because it can be changed into another prime (28740401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14370225 + 14370226.

It is an arithmetic number, because the mean of its divisors is an integer number (14370226).

Almost surely, 2^28740451 is an apocalyptic number.

28740451 is a deficient number, since it is larger than the sum of its proper divisors (1).

28740451 is an equidigital number, since it uses as much as digits as its factorization.

28740451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 28740451 is about 5361.0121245899. The cubic root of 28740451 is about 306.3123634763.

The spelling of 28740451 in words is "twenty-eight million, seven hundred forty thousand, four hundred fifty-one".