28425945 has 32 divisors (see below), whose sum is σ = 47589120. Its totient is φ = 14470400.

The previous prime is 28425883. The next prime is 28425959. The reversal of 28425945 is 54952482.

It is not a de Polignac number, because 28425945 - 2¹¹ = 28423897 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43612 + ... + 44258.

It is an arithmetic number, because the mean of its divisors is an integer number (1487160).

Almost surely, 2^28425945 is an apocalyptic number.

It is an amenable number.

28425945 is a deficient number, since it is larger than the sum of its proper divisors (19163175).

28425945 is a wasteful number, since it uses less digits than its factorization.

28425945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785.

The product of its digits is 115200, while the sum is 39.

The square root of 28425945 is about 5331.5987283366. The cubic root of 28425945 is about 305.1909401911.

The spelling of 28425945 in words is "twenty-eight million, four hundred twenty-five thousand, nine hundred forty-five".