28193037 has 8 divisors (see below), whose sum is σ = 37801440. Its totient is φ = 18690000.

The previous prime is 28192991. The next prime is 28193047. The reversal of 28193037 is 73039182.

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

It is not a de Polignac number, because 28193037 - 2⁷ = 28192909 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 28192989 and 28193007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28193047) 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, 25714 + ... + 26787.

It is an arithmetic number, because the mean of its divisors is an integer number (4725180).

Almost surely, 2^28193037 is an apocalyptic number.

It is an amenable number.

28193037 is a deficient number, since it is larger than the sum of its proper divisors (9608403).

28193037 is a wasteful number, since it uses less digits than its factorization.

28193037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52683.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 28193037 is about 5309.7115740876. The cubic root of 28193037 is about 304.3551258761.

The spelling of 28193037 in words is "twenty-eight million, one hundred ninety-three thousand, thirty-seven".