28994592 has 48 divisors (see below), whose sum is σ = 83032992. Its totient is φ = 8785920.

The previous prime is 28994549. The next prime is 28994593. The reversal of 28994592 is 29549982.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28994593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12673 + ... + 14784.

It is an arithmetic number, because the mean of its divisors is an integer number (1729854).

Almost surely, 2^28994592 is an apocalyptic number.

28994592 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

28994592 is an abundant number, since it is smaller than the sum of its proper divisors (54038400).

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

28994592 is a wasteful number, since it uses less digits than its factorization.

28994592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27481 (or 27473 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 28994592 is about 5384.6626635287. The cubic root of 28994592 is about 307.2125835774.

The spelling of 28994592 in words is "twenty-eight million, nine hundred ninety-four thousand, five hundred ninety-two".