28902093 has 8 divisors (see below), whose sum is σ = 42039456. Its totient is φ = 17516400.

The previous prime is 28902077. The next prime is 28902101. The reversal of 28902093 is 39020982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28902093 - 2⁴ = 28902077 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 875821 = 28902093 / (2 + 8 + 9 + 0 + 2 + 0 + 9 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28902043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437878 + ... + 437943.

It is an arithmetic number, because the mean of its divisors is an integer number (5254932).

Almost surely, 2^28902093 is an apocalyptic number.

It is an amenable number.

28902093 is a deficient number, since it is larger than the sum of its proper divisors (13137363).

28902093 is a wasteful number, since it uses less digits than its factorization.

28902093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875835.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 28902093 is about 5376.0666848543. The cubic root of 28902093 is about 306.8855440951.

The spelling of 28902093 in words is "twenty-eight million, nine hundred two thousand, ninety-three".