28740453 has 32 divisors (see below), whose sum is σ = 45993984. Its totient is φ = 15619392.

The previous prime is 28740451. The next prime is 28740497. The reversal of 28740453 is 35404782.

It is not a de Polignac number, because 28740453 - 2¹ = 28740451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28740451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36126 + ... + 36912.

It is an arithmetic number, because the mean of its divisors is an integer number (1437312).

Almost surely, 2^28740453 is an apocalyptic number.

It is an amenable number.

28740453 is a deficient number, since it is larger than the sum of its proper divisors (17253531).

28740453 is a wasteful number, since it uses less digits than its factorization.

28740453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 28740453 is about 5361.0123111218. The cubic root of 28740453 is about 306.3123705815.

The spelling of 28740453 in words is "twenty-eight million, seven hundred forty thousand, four hundred fifty-three".