28445748 has 24 divisors (see below), whose sum is σ = 68168352. Its totient is φ = 9225504.

The previous prime is 28445701. The next prime is 28445749. The reversal of 28445748 is 84754482.

28445748 = T₂₈₂ + T₂₈₃ + ... + T₅₇₇.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28445749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31590 + ... + 32477.

It is an arithmetic number, because the mean of its divisors is an integer number (2840348).

Almost surely, 2^28445748 is an apocalyptic number.

It is an amenable number.

28445748 is an abundant number, since it is smaller than the sum of its proper divisors (39722604).

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

28445748 is a wasteful number, since it uses less digits than its factorization.

28445748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64111 (or 64109 counting only the distinct ones).

The product of its digits is 286720, while the sum is 42.

The square root of 28445748 is about 5333.4555402666. The cubic root of 28445748 is about 305.2617943970.

The spelling of 28445748 in words is "twenty-eight million, four hundred forty-five thousand, seven hundred forty-eight".