28463949 has 12 divisors (see below), whose sum is σ = 42902496. Its totient is φ = 18150792.

The previous prime is 28463887. The next prime is 28463959. The reversal of 28463949 is 94936482.

28463949 is a `hidden beast` number, since 2 + 8 + 4 + 639 + 4 + 9 = 666.

It is not a de Polignac number, because 28463949 - 2⁷ = 28463821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28463959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68547 + ... + 68960.

It is an arithmetic number, because the mean of its divisors is an integer number (3575208).

Almost surely, 2^28463949 is an apocalyptic number.

It is an amenable number.

28463949 is a deficient number, since it is larger than the sum of its proper divisors (14438547).

28463949 is a wasteful number, since it uses less digits than its factorization.

28463949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137536 (or 137533 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 28463949 is about 5335.1615720613. The cubic root of 28463949 is about 305.3268877263.

The spelling of 28463949 in words is "twenty-eight million, four hundred sixty-three thousand, nine hundred forty-nine".