28440192 has 64 divisors (see below), whose sum is σ = 82424160. Its totient is φ = 8616960.

The previous prime is 28440187. The next prime is 28440221. The reversal of 28440192 is 29104482.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858 + ... + 7590.

Almost surely, 2^28440192 is an apocalyptic number.

28440192 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 28440192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41212080).

28440192 is an abundant number, since it is smaller than the sum of its proper divisors (53983968).

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

28440192 is a wasteful number, since it uses less digits than its factorization.

28440192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6761 (or 6749 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 28440192 is about 5332.9346517654. The cubic root of 28440192 is about 305.2419186090.

The spelling of 28440192 in words is "twenty-eight million, four hundred forty thousand, one hundred ninety-two".