28072450 has 24 divisors (see below), whose sum is σ = 59674752. Its totient is φ = 9624720.

The previous prime is 28072439. The next prime is 28072463. The reversal of 28072450 is 5427082.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39754 + ... + 40453.

It is an arithmetic number, because the mean of its divisors is an integer number (2486448).

Almost surely, 2^28072450 is an apocalyptic number.

28072450 is an abundant number, since it is smaller than the sum of its proper divisors (31602302).

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

28072450 is a wasteful number, since it uses less digits than its factorization.

28072450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80226 (or 80221 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 28072450 is about 5298.3440809370. The cubic root of 28072450 is about 303.9205774168.

The spelling of 28072450 in words is "twenty-eight million, seventy-two thousand, four hundred fifty".