28645892 has 12 divisors (see below), whose sum is σ = 54687696. Its totient is φ = 13020840.

The previous prime is 28645861. The next prime is 28645909. The reversal of 28645892 is 29854682.

It is a Harshad number since it is a multiple of its sum of digits (44), and also a Moran number because the ratio is a prime number: 651043 = 28645892 / (2 + 8 + 6 + 4 + 5 + 8 + 9 + 2).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 325478 + ... + 325565.

It is an arithmetic number, because the mean of its divisors is an integer number (4557308).

Almost surely, 2^28645892 is an apocalyptic number.

28645892 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28645892 is a deficient number, since it is larger than the sum of its proper divisors (26041804).

28645892 is a wasteful number, since it uses less digits than its factorization.

28645892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651058 (or 651056 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 28645892 is about 5352.1857217402. The cubic root of 28645892 is about 305.9760614648.

The spelling of 28645892 in words is "twenty-eight million, six hundred forty-five thousand, eight hundred ninety-two".