28352961 has 36 divisors (see below), whose sum is σ = 50701248. Its totient is φ = 14949792.

The previous prime is 28352903. The next prime is 28352963. The reversal of 28352961 is 16925382.

It is not a de Polignac number, because 28352961 - 2⁶ = 28352897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28352963) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 9316 + ... + 11978.

It is an arithmetic number, because the mean of its divisors is an integer number (1408368).

Almost surely, 2^28352961 is an apocalyptic number.

28352961 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

28352961 is a deficient number, since it is larger than the sum of its proper divisors (22348287).

28352961 is a wasteful number, since it uses less digits than its factorization.

28352961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702 (or 2686 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 28352961 is about 5324.7498532795. The cubic root of 28352961 is about 304.9295223702.

The spelling of 28352961 in words is "twenty-eight million, three hundred fifty-two thousand, nine hundred sixty-one".