28553406 has 16 divisors (see below), whose sum is σ = 65265024. Its totient is φ = 8158104.

The previous prime is 28553383. The next prime is 28553443. The reversal of 28553406 is 60435582.

It is a Curzon number.

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, 339880 + ... + 339963.

It is an arithmetic number, because the mean of its divisors is an integer number (4079064).

Almost surely, 2^28553406 is an apocalyptic number.

28553406 is an abundant number, since it is smaller than the sum of its proper divisors (36711618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28553406 is a wasteful number, since it uses less digits than its factorization.

28553406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679855.

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 28553406 is about 5343.5387151213. The cubic root of 28553406 is about 305.6464154598.

Adding to 28553406 its reverse (60435582), we get a palindrome (88988988).

The spelling of 28553406 in words is "twenty-eight million, five hundred fifty-three thousand, four hundred six".