28394949 has 48 divisors (see below), whose sum is σ = 45964800. Its totient is φ = 15507360.

The previous prime is 28394941. The next prime is 28394963. The reversal of 28394949 is 94949382.

It is not a de Polignac number, because 28394949 - 2³ = 28394941 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28394898 and 28394907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28394941) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 158542 + ... + 158720.

It is an arithmetic number, because the mean of its divisors is an integer number (957600).

Almost surely, 2^28394949 is an apocalyptic number.

It is an amenable number.

28394949 is a deficient number, since it is larger than the sum of its proper divisors (17569851).

28394949 is a wasteful number, since it uses less digits than its factorization.

28394949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246 (or 235 counting only the distinct ones).

The product of its digits is 559872, while the sum is 48.

The square root of 28394949 is about 5328.6911150863. The cubic root of 28394949 is about 305.0799718628.

The spelling of 28394949 in words is "twenty-eight million, three hundred ninety-four thousand, nine hundred forty-nine".