28146607 has 4 divisors (see below), whose sum is σ = 28199176. Its totient is φ = 28094040.

The previous prime is 28146593. The next prime is 28146647. The reversal of 28146607 is 70664182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28146607 - 2⁷ = 28146479 is a prime.

It is a super-2 number, since 2×28146607² = 1584462971224898, which contains 22 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 (28146647) 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, 25473 + ... + 26554.

It is an arithmetic number, because the mean of its divisors is an integer number (7049794).

Almost surely, 2^28146607 is an apocalyptic number.

28146607 is a deficient number, since it is larger than the sum of its proper divisors (52569).

28146607 is an equidigital number, since it uses as much as digits as its factorization.

28146607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52568.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 28146607 is about 5305.3375952902. The cubic root of 28146607 is about 304.1879572595.

The spelling of 28146607 in words is "twenty-eight million, one hundred forty-six thousand, six hundred seven".