28402453 has 2 divisors, whose sum is σ = 28402454. Its totient is φ = 28402452.

The previous prime is 28402433. The next prime is 28402471. The reversal of 28402453 is 35420482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26967249 + 1435204 = 5193^2 + 1198^2 .

It is a cyclic number.

It is not a de Polignac number, because 28402453 - 2¹⁷ = 28271381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28402433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14201226 + 14201227.

It is an arithmetic number, because the mean of its divisors is an integer number (14201227).

Almost surely, 2^28402453 is an apocalyptic number.

It is an amenable number.

28402453 is a deficient number, since it is larger than the sum of its proper divisors (1).

28402453 is an equidigital number, since it uses as much as digits as its factorization.

28402453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 28402453 is about 5329.3951814441. The cubic root of 28402453 is about 305.1068442298.

The spelling of 28402453 in words is "twenty-eight million, four hundred two thousand, four hundred fifty-three".