28307452 has 6 divisors (see below), whose sum is σ = 49538048. Its totient is φ = 14153724.

The previous prime is 28307449. The next prime is 28307453. The reversal of 28307452 is 25470382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28307453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3538428 + ... + 3538435.

Almost surely, 2^28307452 is an apocalyptic number.

It is an amenable number.

28307452 is a deficient number, since it is larger than the sum of its proper divisors (21230596).

28307452 is a wasteful number, since it uses less digits than its factorization.

28307452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7076867 (or 7076865 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 28307452 is about 5320.4747908434. The cubic root of 28307452 is about 304.7662887561.

The spelling of 28307452 in words is "twenty-eight million, three hundred seven thousand, four hundred fifty-two".