28101406 has 16 divisors (see below), whose sum is σ = 44164800. Its totient is φ = 13392288.

The previous prime is 28101401. The next prime is 28101421. The reversal of 28101406 is 60410182.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28101401) 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, 1516 + ... + 7648.

It is an arithmetic number, because the mean of its divisors is an integer number (2760300).

Almost surely, 2^28101406 is an apocalyptic number.

28101406 is a deficient number, since it is larger than the sum of its proper divisors (16063394).

28101406 is a wasteful number, since it uses less digits than its factorization.

28101406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6243.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 28101406 is about 5301.0759285262. The cubic root of 28101406 is about 304.0250368922.

Adding to 28101406 its reverse (60410182), we get a palindrome (88511588).

The spelling of 28101406 in words is "twenty-eight million, one hundred one thousand, four hundred six".