28150405 has 8 divisors (see below), whose sum is σ = 33933312. Its totient is φ = 22418448.

The previous prime is 28150357. The next prime is 28150469. The reversal of 28150405 is 50405182.

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 28150405 - 2⁷ = 28150277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28150405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11509 + ... + 13738.

It is an arithmetic number, because the mean of its divisors is an integer number (4241664).

Almost surely, 2^28150405 is an apocalyptic number.

It is an amenable number.

28150405 is a deficient number, since it is larger than the sum of its proper divisors (5782907).

28150405 is a wasteful number, since it uses less digits than its factorization.

28150405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25475.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 28150405 is about 5305.6955246226. The cubic root of 28150405 is about 304.2016386469.

Adding to 28150405 its reverse (50405182), we get a palindrome (78555587).

The spelling of 28150405 in words is "twenty-eight million, one hundred fifty thousand, four hundred five".