28896957 has 12 divisors (see below), whose sum is σ = 44195580. Its totient is φ = 18131328.

The previous prime is 28896953. The next prime is 28896971. The reversal of 28896957 is 75969882.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 24710841 + 4186116 = 4971^2 + 2046^2 .

It is not a de Polignac number, because 28896957 - 2² = 28896953 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28896953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94282 + ... + 94587.

It is an arithmetic number, because the mean of its divisors is an integer number (3682965).

Almost surely, 2^28896957 is an apocalyptic number.

It is an amenable number.

28896957 is a deficient number, since it is larger than the sum of its proper divisors (15298623).

28896957 is a wasteful number, since it uses less digits than its factorization.

28896957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188892 (or 188889 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 54.

The square root of 28896957 is about 5375.5889909851. The cubic root of 28896957 is about 306.8673648174.

The spelling of 28896957 in words is "twenty-eight million, eight hundred ninety-six thousand, nine hundred fifty-seven".