28152471 has 16 divisors (see below), whose sum is σ = 39833600. Its totient is φ = 17635968.

The previous prime is 28152409. The next prime is 28152479. The reversal of 28152471 is 17425182.

It is not a de Polignac number, because 28152471 - 2⁷ = 28152343 is a prime.

It is a super-3 number, since 3×28152471³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28152479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5295 + ... + 9183.

It is an arithmetic number, because the mean of its divisors is an integer number (2489600).

Almost surely, 2^28152471 is an apocalyptic number.

28152471 is a deficient number, since it is larger than the sum of its proper divisors (11681129).

28152471 is a wasteful number, since it uses less digits than its factorization.

28152471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038.

The product of its digits is 4480, while the sum is 30.

The square root of 28152471 is about 5305.8902174847. The cubic root of 28152471 is about 304.2090804014.

The spelling of 28152471 in words is "twenty-eight million, one hundred fifty-two thousand, four hundred seventy-one".