28993782 has 32 divisors (see below), whose sum is σ = 59938560. Its totient is φ = 9344160.

The previous prime is 28993759. The next prime is 28993787. The reversal of 28993782 is 28739982.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28993787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27607 + ... + 28637.

It is an arithmetic number, because the mean of its divisors is an integer number (1873080).

Almost surely, 2^28993782 is an apocalyptic number.

28993782 is an abundant number, since it is smaller than the sum of its proper divisors (30944778).

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

28993782 is a wasteful number, since it uses less digits than its factorization.

28993782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188.

The product of its digits is 435456, while the sum is 48.

The square root of 28993782 is about 5384.5874493781. The cubic root of 28993782 is about 307.2097227622.

The spelling of 28993782 in words is "twenty-eight million, nine hundred ninety-three thousand, seven hundred eighty-two".