28353945 has 16 divisors (see below), whose sum is σ = 45541440. Its totient is φ = 15063744.

The previous prime is 28353937. The next prime is 28353953. The reversal of 28353945 is 54935382.

It is an interprime number because it is at equal distance from previous prime (28353937) and next prime (28353953).

It is not a de Polignac number, because 28353945 - 2³ = 28353937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 522 + ... + 7548.

It is an arithmetic number, because the mean of its divisors is an integer number (2846340).

Almost surely, 2^28353945 is an apocalyptic number.

It is an amenable number.

28353945 is a deficient number, since it is larger than the sum of its proper divisors (17187495).

28353945 is a wasteful number, since it uses less digits than its factorization.

28353945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7304.

The product of its digits is 129600, while the sum is 39.

The square root of 28353945 is about 5324.8422511845. The cubic root of 28353945 is about 304.9330498933.

The spelling of 28353945 in words is "twenty-eight million, three hundred fifty-three thousand, nine hundred forty-five".