28619361 has 12 divisors (see below), whose sum is σ = 41483988. Its totient is φ = 19012704.

The previous prime is 28619359. The next prime is 28619369. The reversal of 28619361 is 16391682.

28619361 is a `hidden beast` number, since 2 + 8 + 619 + 36 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 22268961 + 6350400 = 4719^2 + 2520^2 .

It is not a de Polignac number, because 28619361 - 2¹ = 28619359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28619369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2790 + ... + 8063.

It is an arithmetic number, because the mean of its divisors is an integer number (3456999).

Almost surely, 2^28619361 is an apocalyptic number.

It is an amenable number.

28619361 is a deficient number, since it is larger than the sum of its proper divisors (12864627).

28619361 is a wasteful number, since it uses less digits than its factorization.

28619361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11152 (or 11149 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 28619361 is about 5349.7066274703. The cubic root of 28619361 is about 305.8815702157.

The spelling of 28619361 in words is "twenty-eight million, six hundred nineteen thousand, three hundred sixty-one".