28747412 has 12 divisors (see below), whose sum is σ = 51257556. Its totient is φ = 14102400.

The previous prime is 28747387. The next prime is 28747417. The reversal of 28747412 is 21474782.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14714896 + 14032516 = 3836^2 + 3746^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28747417) 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 3 ways as a sum of consecutive naturals, for example, 67589 + ... + 68012.

It is an arithmetic number, because the mean of its divisors is an integer number (4271463).

Almost surely, 2^28747412 is an apocalyptic number.

It is an amenable number.

28747412 is a deficient number, since it is larger than the sum of its proper divisors (22510144).

28747412 is a wasteful number, since it uses less digits than its factorization.

28747412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135658 (or 135656 counting only the distinct ones).

The product of its digits is 25088, while the sum is 35.

The square root of 28747412 is about 5361.6613097062. The cubic root of 28747412 is about 306.3370913212.

The spelling of 28747412 in words is "twenty-eight million, seven hundred forty-seven thousand, four hundred twelve".