28325624 has 8 divisors (see below), whose sum is σ = 53110560. Its totient is φ = 14162808.

The previous prime is 28325623. The next prime is 28325641. The reversal of 28325624 is 42652382.

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 (28325623) 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, 1770344 + ... + 1770359.

It is an arithmetic number, because the mean of its divisors is an integer number (6638820).

Almost surely, 2^28325624 is an apocalyptic number.

It is an amenable number.

28325624 is a deficient number, since it is larger than the sum of its proper divisors (24784936).

28325624 is a wasteful number, since it uses less digits than its factorization.

28325624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3540709 (or 3540705 counting only the distinct ones).

The product of its digits is 23040, while the sum is 32.

The square root of 28325624 is about 5322.1822591865. The cubic root of 28325624 is about 304.8314898244.

The spelling of 28325624 in words is "twenty-eight million, three hundred twenty-five thousand, six hundred twenty-four".