28351406 has 8 divisors (see below), whose sum is σ = 42591960. Its totient is φ = 14154088.

The previous prime is 28351399. The next prime is 28351417. The reversal of 28351406 is 60415382.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9116 + ... + 11823.

It is an arithmetic number, because the mean of its divisors is an integer number (5323995).

Almost surely, 2^28351406 is an apocalyptic number.

28351406 is a deficient number, since it is larger than the sum of its proper divisors (14240554).

28351406 is a wasteful number, since it uses less digits than its factorization.

28351406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21618.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 28351406 is about 5324.6038350285. The cubic root of 28351406 is about 304.9239477134.

Adding to 28351406 its reverse (60415382), we get a palindrome (88766788).

The spelling of 28351406 in words is "twenty-eight million, three hundred fifty-one thousand, four hundred six".