28062945 has 12 divisors (see below), whose sum is σ = 48642516. Its totient is φ = 14966880.

The previous prime is 28062941. The next prime is 28062953. The reversal of 28062945 is 54926082.

It is a happy number.

28062945 is a `hidden beast` number, since 28 + 0 + 629 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19820304 + 8242641 = 4452^2 + 2871^2 .

It is not a de Polignac number, because 28062945 - 2² = 28062941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28062941) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 311766 + ... + 311855.

It is an arithmetic number, because the mean of its divisors is an integer number (4053543).

Almost surely, 2^28062945 is an apocalyptic number.

It is an amenable number.

28062945 is a deficient number, since it is larger than the sum of its proper divisors (20579571).

28062945 is a wasteful number, since it uses less digits than its factorization.

28062945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623632 (or 623629 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 28062945 is about 5297.4470266346. The cubic root of 28062945 is about 303.8862722388.

The spelling of 28062945 in words is "twenty-eight million, sixty-two thousand, nine hundred forty-five".