28433472 has 28 divisors (see below), whose sum is σ = 75230736. Its totient is φ = 9477760.

The previous prime is 28433437. The next prime is 28433473. The reversal of 28433472 is 27433482.

It is not an unprimeable number, because it can be changed into a prime (28433473) 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 3 ways as a sum of consecutive naturals, for example, 73854 + ... + 74237.

It is an arithmetic number, because the mean of its divisors is an integer number (2686812).

Almost surely, 2^28433472 is an apocalyptic number.

It is an amenable number.

28433472 is an abundant number, since it is smaller than the sum of its proper divisors (46797264).

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

28433472 is a wasteful number, since it uses less digits than its factorization.

28433472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148106 (or 148096 counting only the distinct ones).

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

The square root of 28433472 is about 5332.3045674455. The cubic root of 28433472 is about 305.2178753200.

The spelling of 28433472 in words is "twenty-eight million, four hundred thirty-three thousand, four hundred seventy-two".