28349396 has 6 divisors (see below), whose sum is σ = 49611450. Its totient is φ = 14174696.

The previous prime is 28349393. The next prime is 28349401. The reversal of 28349396 is 69394382.

It can be written as a sum of positive squares in only one way, i.e., 16924996 + 11424400 = 4114^2 + 3380^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28349393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3543671 + ... + 3543678.

It is an arithmetic number, because the mean of its divisors is an integer number (8268575).

Almost surely, 2^28349396 is an apocalyptic number.

It is an amenable number.

28349396 is a deficient number, since it is larger than the sum of its proper divisors (21262054).

28349396 is a wasteful number, since it uses less digits than its factorization.

28349396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7087353 (or 7087351 counting only the distinct ones).

The product of its digits is 279936, while the sum is 44.

The square root of 28349396 is about 5324.4150852465. The cubic root of 28349396 is about 304.9167415850.

The spelling of 28349396 in words is "twenty-eight million, three hundred forty-nine thousand, three hundred ninety-six".