28152406 has 4 divisors (see below), whose sum is σ = 42228612. Its totient is φ = 14076202.

The previous prime is 28152403. The next prime is 28152409. The reversal of 28152406 is 60425182.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (28152403) and next prime (28152409).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28152403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7038100 + ... + 7038103.

It is an arithmetic number, because the mean of its divisors is an integer number (10557153).

Almost surely, 2^28152406 is an apocalyptic number.

28152406 is a deficient number, since it is larger than the sum of its proper divisors (14076206).

28152406 is a wasteful number, since it uses less digits than its factorization.

28152406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14076205.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 28152406 is about 5305.8840922131. The cubic root of 28152406 is about 304.2088462763.

Adding to 28152406 its reverse (60425182), we get a palindrome (88577588).

The spelling of 28152406 in words is "twenty-eight million, one hundred fifty-two thousand, four hundred six".