28349961 has 16 divisors (see below), whose sum is σ = 39709824. Its totient is φ = 17956224.

The previous prime is 28349929. The next prime is 28349987. The reversal of 28349961 is 16994382.

It is not a de Polignac number, because 28349961 - 2⁵ = 28349929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28349921) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9525 + ... + 12141.

It is an arithmetic number, because the mean of its divisors is an integer number (2481864).

Almost surely, 2^28349961 is an apocalyptic number.

It is an amenable number.

28349961 is a deficient number, since it is larger than the sum of its proper divisors (11359863).

28349961 is a wasteful number, since it uses less digits than its factorization.

28349961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2800.

The product of its digits is 93312, while the sum is 42.

The square root of 28349961 is about 5324.4681424533. The cubic root of 28349961 is about 304.9187672227.

The spelling of 28349961 in words is "twenty-eight million, three hundred forty-nine thousand, nine hundred sixty-one".