28011294 has 48 divisors (see below), whose sum is σ = 62990928. Its totient is φ = 8989056.

The previous prime is 28011289. The next prime is 28011299. The reversal of 28011294 is 49211082.

It is an interprime number because it is at equal distance from previous prime (28011289) and next prime (28011299).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28011299) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91089 + ... + 91395.

It is an arithmetic number, because the mean of its divisors is an integer number (1312311).

Almost surely, 2^28011294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28011294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31495464).

28011294 is an abundant number, since it is smaller than the sum of its proper divisors (34979634).

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

28011294 is a wasteful number, since it uses less digits than its factorization.

28011294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 28011294 is about 5292.5696972265. The cubic root of 28011294 is about 303.6997193611.

It can be divided in two parts, 2801 and 1294, that added together give a triangular number (4095 = T₉₀).

The spelling of 28011294 in words is "twenty-eight million, eleven thousand, two hundred ninety-four".