28373745 has 32 divisors (see below), whose sum is σ = 49449600. Its totient is φ = 13837824.

The previous prime is 28373729. The next prime is 28373753. The reversal of 28373745 is 54737382.

It is not a de Polignac number, because 28373745 - 2⁴ = 28373729 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, 6549 + ... + 9981.

It is an arithmetic number, because the mean of its divisors is an integer number (1545300).

Almost surely, 2^28373745 is an apocalyptic number.

It is an amenable number.

28373745 is a deficient number, since it is larger than the sum of its proper divisors (21075855).

28373745 is a wasteful number, since it uses less digits than its factorization.

28373745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489.

The product of its digits is 141120, while the sum is 39.

The square root of 28373745 is about 5326.7011367262. The cubic root of 28373745 is about 305.0040132053.

The spelling of 28373745 in words is "twenty-eight million, three hundred seventy-three thousand, seven hundred forty-five".