28087092 has 72 divisors (see below), whose sum is σ = 81550560. Its totient is φ = 8061120.

The previous prime is 28087063. The next prime is 28087099. The reversal of 28087092 is 29078082.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28087099) 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, 5658 + ... + 9390.

Almost surely, 2^28087092 is an apocalyptic number.

28087092 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28087092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40775280).

28087092 is an abundant number, since it is smaller than the sum of its proper divisors (53463468).

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

28087092 is a wasteful number, since it uses less digits than its factorization.

28087092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3773 (or 3768 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 28087092 is about 5299.7256532768. The cubic root of 28087092 is about 303.9734077616.

The spelling of 28087092 in words is "twenty-eight million, eighty-seven thousand, ninety-two".