28234631 has 8 divisors (see below), whose sum is σ = 28529424. Its totient is φ = 27941760.

The previous prime is 28234601. The next prime is 28234649. The reversal of 28234631 is 13643282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28234631 - 2⁶ = 28234567 is a prime.

It is a super-2 number, since 2×28234631² = 1594388775412322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28234594 and 28234603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28234601) 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, 64991 + ... + 65423.

It is an arithmetic number, because the mean of its divisors is an integer number (3566178).

Almost surely, 2^28234631 is an apocalyptic number.

28234631 is a deficient number, since it is larger than the sum of its proper divisors (294793).

28234631 is a wasteful number, since it uses less digits than its factorization.

28234631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its digits is 6912, while the sum is 29.

The square root of 28234631 is about 5313.6269157704. The cubic root of 28234631 is about 304.5047269595.

The spelling of 28234631 in words is "twenty-eight million, two hundred thirty-four thousand, six hundred thirty-one".