28894497 has 16 divisors (see below), whose sum is σ = 40680000. Its totient is φ = 18192384.

The previous prime is 28894471. The next prime is 28894501. The reversal of 28894497 is 79449882.

It is not a de Polignac number, because 28894497 - 2⁸ = 28894241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28894427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25029 + ... + 26157.

It is an arithmetic number, because the mean of its divisors is an integer number (2542500).

Almost surely, 2^28894497 is an apocalyptic number.

It is an amenable number.

28894497 is a deficient number, since it is larger than the sum of its proper divisors (11785503).

28894497 is a wasteful number, since it uses less digits than its factorization.

28894497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1600.

The product of its digits is 1161216, while the sum is 51.

The square root of 28894497 is about 5375.3601739790. The cubic root of 28894497 is about 306.8586566901.

The spelling of 28894497 in words is "twenty-eight million, eight hundred ninety-four thousand, four hundred ninety-seven".