28463290 has 8 divisors (see below), whose sum is σ = 51233940. Its totient is φ = 11385312.

The previous prime is 28463269. The next prime is 28463293. The reversal of 28463290 is 9236482.

It can be written as a sum of positive squares in 2 ways, for example, as 26842761 + 1620529 = 5181^2 + 1273^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28463293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1423155 + ... + 1423174.

Almost surely, 2^28463290 is an apocalyptic number.

28463290 is a deficient number, since it is larger than the sum of its proper divisors (22770650).

28463290 is a wasteful number, since it uses less digits than its factorization.

28463290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2846336.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 28463290 is about 5335.0998116249. The cubic root of 28463290 is about 305.3245313892.

The spelling of 28463290 in words is "twenty-eight million, four hundred sixty-three thousand, two hundred ninety".