28937234 has 8 divisors (see below), whose sum is σ = 43853628. Its totient is φ = 14319360.

The previous prime is 28937231. The next prime is 28937239. The reversal of 28937234 is 43273982.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27931225 + 1006009 = 5285^2 + 1003^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28937231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74387 + ... + 74774.

Almost surely, 2^28937234 is an apocalyptic number.

28937234 is a deficient number, since it is larger than the sum of its proper divisors (14916394).

28937234 is a wasteful number, since it uses less digits than its factorization.

28937234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149260.

The product of its digits is 72576, while the sum is 38.

The square root of 28937234 is about 5379.3339736439. Note that the first 3 decimals coincide. The cubic root of 28937234 is about 307.0098706981.

The spelling of 28937234 in words is "twenty-eight million, nine hundred thirty-seven thousand, two hundred thirty-four".