28171534 has 8 divisors (see below), whose sum is σ = 42414048. Its totient is φ = 14033520.

The previous prime is 28171531. The next prime is 28171537. The reversal of 28171534 is 43517182.

It is an interprime number because it is at equal distance from previous prime (28171531) and next prime (28171537).

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

It is a junction number, because it is equal to n+sod(n) for n = 28171496 and 28171505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28171531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25447 + ... + 26530.

It is an arithmetic number, because the mean of its divisors is an integer number (5301756).

Almost surely, 2^28171534 is an apocalyptic number.

28171534 is a deficient number, since it is larger than the sum of its proper divisors (14242514).

28171534 is a wasteful number, since it uses less digits than its factorization.

28171534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52250.

The product of its digits is 6720, while the sum is 31.

The square root of 28171534 is about 5307.6863132631. The cubic root of 28171534 is about 304.2777283632.

The spelling of 28171534 in words is "twenty-eight million, one hundred seventy-one thousand, five hundred thirty-four".