28463489 has 4 divisors (see below), whose sum is σ = 29701056. Its totient is φ = 27225924.

The previous prime is 28463483. The next prime is 28463507. The reversal of 28463489 is 98436482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28463489 - 2⁴ = 28463473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28463483) 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, 618749 + ... + 618794.

It is an arithmetic number, because the mean of its divisors is an integer number (7425264).

Almost surely, 2^28463489 is an apocalyptic number.

It is an amenable number.

28463489 is a deficient number, since it is larger than the sum of its proper divisors (1237567).

28463489 is a wasteful number, since it uses less digits than its factorization.

28463489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237566.

The product of its digits is 331776, while the sum is 44.

The square root of 28463489 is about 5335.1184616651. The cubic root of 28463489 is about 305.3252429425.

The spelling of 28463489 in words is "twenty-eight million, four hundred sixty-three thousand, four hundred eighty-nine".