28433742 has 8 divisors (see below), whose sum is σ = 56867496. Its totient is φ = 9477912.

The previous prime is 28433737. The next prime is 28433749. The reversal of 28433742 is 24733482.

It is a sphenic number, since it is the product of 3 distinct primes.

28433742 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28433749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2369473 + ... + 2369484.

It is an arithmetic number, because the mean of its divisors is an integer number (7108437).

Almost surely, 2^28433742 is an apocalyptic number.

28433742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28433742 is a wasteful number, since it uses less digits than its factorization.

28433742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4738962.

The product of its digits is 32256, while the sum is 33.

The square root of 28433742 is about 5332.3298847689. The cubic root of 28433742 is about 305.2188414180.

The spelling of 28433742 in words is "twenty-eight million, four hundred thirty-three thousand, seven hundred forty-two".