28952988 has 12 divisors (see below), whose sum is σ = 67557000. Its totient is φ = 9650992.

The previous prime is 28952971. The next prime is 28952993. The reversal of 28952988 is 88925982.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 28952988.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1206363 + ... + 1206386.

It is an arithmetic number, because the mean of its divisors is an integer number (5629750).

Almost surely, 2^28952988 is an apocalyptic number.

It is an amenable number.

28952988 is an abundant number, since it is smaller than the sum of its proper divisors (38604012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28952988 is a wasteful number, since it uses less digits than its factorization.

28952988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412756 (or 2412754 counting only the distinct ones).

The product of its digits is 829440, while the sum is 51.

The square root of 28952988 is about 5380.7980820692. The cubic root of 28952988 is about 307.0655746635.

The spelling of 28952988 in words is "twenty-eight million, nine hundred fifty-two thousand, nine hundred eighty-eight".