28496949 has 12 divisors (see below), whose sum is σ = 41144256. Its totient is φ = 17536272.

The previous prime is 28496939. The next prime is 28496983. The reversal of 28496949 is 94969482.

It is a happy number.

It is not a de Polignac number, because 28496949 - 2⁴ = 28496933 is a prime.

It is a super-2 number, since 2×28496949² = 1624152204617202, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28496939) 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, 27597 + ... + 28610.

It is an arithmetic number, because the mean of its divisors is an integer number (3428688).

Almost surely, 2^28496949 is an apocalyptic number.

It is an amenable number.

28496949 is a deficient number, since it is larger than the sum of its proper divisors (12647307).

28496949 is a wasteful number, since it uses less digits than its factorization.

28496949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56236 (or 56223 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 51.

The square root of 28496949 is about 5338.2533660365. The cubic root of 28496949 is about 305.4448368787. Note that the first 3 decimals are identical.

The spelling of 28496949 in words is "twenty-eight million, four hundred ninety-six thousand, nine hundred forty-nine".