28538094 has 32 divisors (see below), whose sum is σ = 61899264. Its totient is φ = 8719200.

The previous prime is 28538093. The next prime is 28538099. The reversal of 28538094 is 49083582.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28538093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10567 + ... + 12989.

It is an arithmetic number, because the mean of its divisors is an integer number (1934352).

Almost surely, 2^28538094 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28538094, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30949632).

28538094 is an abundant number, since it is smaller than the sum of its proper divisors (33361170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28538094 is a wasteful number, since it uses less digits than its factorization.

28538094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 28538094 is about 5342.1057645838. The cubic root of 28538094 is about 305.5917705518.

The spelling of 28538094 in words is "twenty-eight million, five hundred thirty-eight thousand, ninety-four".