28961052 has 12 divisors (see below), whose sum is σ = 67575816. Its totient is φ = 9653680.

The previous prime is 28961041. The next prime is 28961057. The reversal of 28961052 is 25016982.

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

It is a super-3 number, since 3×28961052³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28961057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1206699 + ... + 1206722.

It is an arithmetic number, because the mean of its divisors is an integer number (5631318).

Almost surely, 2^28961052 is an apocalyptic number.

It is an amenable number.

28961052 is an abundant number, since it is smaller than the sum of its proper divisors (38614764).

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

28961052 is a wasteful number, since it uses less digits than its factorization.

28961052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413428 (or 2413426 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 28961052 is about 5381.5473611221. The cubic root of 28961052 is about 307.0940800339.

The spelling of 28961052 in words is "twenty-eight million, nine hundred sixty-one thousand, fifty-two".