28621411 has 16 divisors (see below), whose sum is σ = 35358400. Its totient is φ = 22560768.

The previous prime is 28621399. The next prime is 28621427. The reversal of 28621411 is 11412682.

It is a cyclic number.

It is not a de Polignac number, because 28621411 - 2⁵ = 28621379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28621211) 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, 36835 + ... + 37603.

It is an arithmetic number, because the mean of its divisors is an integer number (2209900).

Almost surely, 2^28621411 is an apocalyptic number.

28621411 is a deficient number, since it is larger than the sum of its proper divisors (6736989).

28621411 is a wasteful number, since it uses less digits than its factorization.

28621411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198.

The product of its digits is 768, while the sum is 25.

The square root of 28621411 is about 5349.8982233310. The cubic root of 28621411 is about 305.8888734564. Note that the first 4 decimals are identical.

It can be divided in two parts, 286214 and 11, that added together give a square (286225 = 535²).

The spelling of 28621411 in words is "twenty-eight million, six hundred twenty-one thousand, four hundred eleven".