28438411 has 8 divisors (see below), whose sum is σ = 28965600. Its totient is φ = 27914880.

The previous prime is 28438409. The next prime is 28438429. The reversal of 28438411 is 11483482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28438411 - 2¹ = 28438409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28438441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18355 + ... + 19843.

It is an arithmetic number, because the mean of its divisors is an integer number (3620700).

Almost surely, 2^28438411 is an apocalyptic number.

28438411 is a deficient number, since it is larger than the sum of its proper divisors (527189).

28438411 is a wasteful number, since it uses less digits than its factorization.

28438411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1829.

The product of its digits is 6144, while the sum is 31.

The square root of 28438411 is about 5332.7676679188. The cubic root of 28438411 is about 305.2355467908.

The spelling of 28438411 in words is "twenty-eight million, four hundred thirty-eight thousand, four hundred eleven".