28750424 has 8 divisors (see below), whose sum is σ = 53907060. Its totient is φ = 14375208.

The previous prime is 28750411. The next prime is 28750427. The reversal of 28750424 is 42405782.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28750427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1796894 + ... + 1796909.

Almost surely, 2^28750424 is an apocalyptic number.

It is an amenable number.

28750424 is a deficient number, since it is larger than the sum of its proper divisors (25156636).

28750424 is a wasteful number, since it uses less digits than its factorization.

28750424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593809 (or 3593805 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 28750424 is about 5361.9421854399. The cubic root of 28750424 is about 306.3477897346.

It can be divided in two parts, 287504 and 24, that multiplied together give a palindrome (6900096).

The spelling of 28750424 in words is "twenty-eight million, seven hundred fifty thousand, four hundred twenty-four".