28433406 has 32 divisors (see below), whose sum is σ = 58595328. Its totient is φ = 9192960.

The previous prime is 28433389. The next prime is 28433407. The reversal of 28433406 is 60433482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28433407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48990 + ... + 49566.

It is an arithmetic number, because the mean of its divisors is an integer number (1831104).

Almost surely, 2^28433406 is an apocalyptic number.

28433406 is an abundant number, since it is smaller than the sum of its proper divisors (30161922).

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

28433406 is a wasteful number, since it uses less digits than its factorization.

28433406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 28433406 is about 5332.2983787481. The cubic root of 28433406 is about 305.2176391617.

Adding to 28433406 its reverse (60433482), we get a palindrome (88866888).

The spelling of 28433406 in words is "twenty-eight million, four hundred thirty-three thousand, four hundred six".