28645492 has 12 divisors (see below), whose sum is σ = 50816836. Its totient is φ = 14126400.

The previous prime is 28645489. The next prime is 28645499. The reversal of 28645492 is 29454682.

It can be written as a sum of positive squares in 2 ways, for example, as 8088336 + 20557156 = 2844^2 + 4534^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28645499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48759 + ... + 49342.

Almost surely, 2^28645492 is an apocalyptic number.

It is an amenable number.

28645492 is a deficient number, since it is larger than the sum of its proper divisors (22171344).

28645492 is a wasteful number, since it uses less digits than its factorization.

28645492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98178 (or 98176 counting only the distinct ones).

The product of its digits is 138240, while the sum is 40.

The square root of 28645492 is about 5352.1483536987. The cubic root of 28645492 is about 305.9746372816.

The spelling of 28645492 in words is "twenty-eight million, six hundred forty-five thousand, four hundred ninety-two".