28571146 has 8 divisors (see below), whose sum is σ = 43236324. Its totient is φ = 14159040.

The previous prime is 28571143. The next prime is 28571149. The reversal of 28571146 is 64117582.

It is an interprime number because it is at equal distance from previous prime (28571143) and next prime (28571149).

It can be written as a sum of positive squares in 2 ways, for example, as 27678121 + 893025 = 5261^2 + 945^2 .

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 (28571143) 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, 62985 + ... + 63436.

Almost surely, 2^28571146 is an apocalyptic number.

28571146 is a deficient number, since it is larger than the sum of its proper divisors (14665178).

28571146 is a wasteful number, since it uses less digits than its factorization.

28571146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126536.

The product of its digits is 13440, while the sum is 34.

The square root of 28571146 is about 5345.1984060463. The cubic root of 28571146 is about 305.7097009033.

The spelling of 28571146 in words is "twenty-eight million, five hundred seventy-one thousand, one hundred forty-six".