28458406 has 16 divisors (see below), whose sum is σ = 45494784. Its totient is φ = 13319944.

The previous prime is 28458401. The next prime is 28458413. The reversal of 28458406 is 60485482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28458401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4420 + ... + 8743.

It is an arithmetic number, because the mean of its divisors is an integer number (2843424).

Almost surely, 2^28458406 is an apocalyptic number.

28458406 is a deficient number, since it is larger than the sum of its proper divisors (17036378).

28458406 is a wasteful number, since it uses less digits than its factorization.

28458406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13235.

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 28458406 is about 5334.6420685928. The cubic root of 28458406 is about 305.3070669018.

The spelling of 28458406 in words is "twenty-eight million, four hundred fifty-eight thousand, four hundred six".