28799190 has 96 divisors (see below), whose sum is σ = 90642240. Its totient is φ = 6193152.

The previous prime is 28799189. The next prime is 28799191. The reversal of 28799190 is 9199782.

It is an interprime number because it is at equal distance from previous prime (28799189) and next prime (28799191).

It is a super-2 number, since 2×28799190² = 1658786689312200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28799191) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9366 + ... + 12054.

It is an arithmetic number, because the mean of its divisors is an integer number (944190).

Almost surely, 2^28799190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28799190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45321120).

28799190 is an abundant number, since it is smaller than the sum of its proper divisors (61843050).

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

28799190 is a wasteful number, since it uses less digits than its factorization.

28799190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726 (or 2723 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 28799190 is about 5366.4876781746. The cubic root of 28799190 is about 306.5208992701.

The spelling of 28799190 in words is "twenty-eight million, seven hundred ninety-nine thousand, one hundred ninety".