28699406 has 4 divisors (see below), whose sum is σ = 43049112. Its totient is φ = 14349702.

The previous prime is 28699399. The next prime is 28699409. The reversal of 28699406 is 60499682.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28699409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7174850 + ... + 7174853.

It is an arithmetic number, because the mean of its divisors is an integer number (10762278).

Almost surely, 2^28699406 is an apocalyptic number.

28699406 is a deficient number, since it is larger than the sum of its proper divisors (14349706).

28699406 is a wasteful number, since it uses less digits than its factorization.

28699406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14349705.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 28699406 is about 5357.1826550903. The cubic root of 28699406 is about 306.1664764036.

The spelling of 28699406 in words is "twenty-eight million, six hundred ninety-nine thousand, four hundred six".