28741772 has 12 divisors (see below), whose sum is σ = 50796816. Its totient is φ = 14228400.

The previous prime is 28741771. The next prime is 28741819. The reversal of 28741772 is 27714782.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28741771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35168 + ... + 35975.

It is an arithmetic number, because the mean of its divisors is an integer number (4233068).

Almost surely, 2^28741772 is an apocalyptic number.

It is an amenable number.

28741772 is a deficient number, since it is larger than the sum of its proper divisors (22055044).

28741772 is a wasteful number, since it uses less digits than its factorization.

28741772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71248 (or 71246 counting only the distinct ones).

The product of its digits is 43904, while the sum is 38.

The square root of 28741772 is about 5361.1353275216. The cubic root of 28741772 is about 306.3170564255.

The spelling of 28741772 in words is "twenty-eight million, seven hundred forty-one thousand, seven hundred seventy-two".