28427045 has 16 divisors (see below), whose sum is σ = 34836480. Its totient is φ = 22264704.

The previous prime is 28427039. The next prime is 28427053. The reversal of 28427045 is 54072482.

It is a cyclic number.

It is not a de Polignac number, because 28427045 - 2⁸ = 28426789 is a prime.

It is a congruent number.

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, 56264 + ... + 56766.

It is an arithmetic number, because the mean of its divisors is an integer number (2177280).

Almost surely, 2^28427045 is an apocalyptic number.

It is an amenable number.

28427045 is a deficient number, since it is larger than the sum of its proper divisors (6409435).

28427045 is a wasteful number, since it uses less digits than its factorization.

28427045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724.

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 28427045 is about 5331.7018858897. The cubic root of 28427045 is about 305.1948768026.

The spelling of 28427045 in words is "twenty-eight million, four hundred twenty-seven thousand, forty-five".