28140951 has 8 divisors (see below), whose sum is σ = 37545984. Its totient is φ = 18748280.

The previous prime is 28140949. The next prime is 28140971. The reversal of 28140951 is 15904182.

It is a happy number.

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 28140951 - 2¹ = 28140949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28140971) 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, 6316 + ... + 9806.

It is an arithmetic number, because the mean of its divisors is an integer number (4693248).

Almost surely, 2^28140951 is an apocalyptic number.

28140951 is a deficient number, since it is larger than the sum of its proper divisors (9405033).

28140951 is a wasteful number, since it uses less digits than its factorization.

28140951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6181.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 28140951 is about 5304.8045204324. The cubic root of 28140951 is about 304.1675805898.

The spelling of 28140951 in words is "twenty-eight million, one hundred forty thousand, nine hundred fifty-one".