28888612 has 6 divisors (see below), whose sum is σ = 50555078. Its totient is φ = 14444304.

The previous prime is 28888577. The next prime is 28888619. The reversal of 28888612 is 21688882.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 27311076 + 1577536 = 5226^2 + 1256^2 .

It is not an unprimeable number, because it can be changed into a prime (28888619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3611073 + ... + 3611080.

Almost surely, 2^28888612 is an apocalyptic number.

It is an amenable number.

28888612 is a deficient number, since it is larger than the sum of its proper divisors (21666466).

28888612 is a wasteful number, since it uses less digits than its factorization.

28888612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7222157 (or 7222155 counting only the distinct ones).

The product of its digits is 98304, while the sum is 43.

The square root of 28888612 is about 5374.8127409241. The cubic root of 28888612 is about 306.8378224368.

The spelling of 28888612 in words is "twenty-eight million, eight hundred eighty-eight thousand, six hundred twelve".