28136190 has 64 divisors (see below), whose sum is σ = 73218816. Its totient is φ = 6892032.

The previous prime is 28136183. The next prime is 28136191. The reversal of 28136190 is 9163182.

It is a super-2 number, since 2×28136190² = 1583290375432200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28136191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21289 + ... + 22571.

It is an arithmetic number, because the mean of its divisors is an integer number (1144044).

Almost surely, 2^28136190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28136190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36609408).

28136190 is an abundant number, since it is smaller than the sum of its proper divisors (45082626).

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

28136190 is a wasteful number, since it uses less digits than its factorization.

28136190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 28136190 is about 5304.3557572998. The cubic root of 28136190 is about 304.1504261882.

The spelling of 28136190 in words is "twenty-eight million, one hundred thirty-six thousand, one hundred ninety".