28673153 has 4 divisors (see below), whose sum is σ = 28818900. Its totient is φ = 28527408.

The previous prime is 28673143. The next prime is 28673179. The reversal of 28673153 is 35137682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35137682 = 2 ⋅17568841.

It can be written as a sum of positive squares in 2 ways, for example, as 25877569 + 2795584 = 5087^2 + 1672^2 .

It is a cyclic number.

It is not a de Polignac number, because 28673153 - 2⁶ = 28673089 is a prime.

It is a super-2 number, since 2×28673153² = 1644299405922818, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28673123) 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, 72578 + ... + 72971.

It is an arithmetic number, because the mean of its divisors is an integer number (7204725).

Almost surely, 2^28673153 is an apocalyptic number.

It is an amenable number.

28673153 is a deficient number, since it is larger than the sum of its proper divisors (145747).

28673153 is a wasteful number, since it uses less digits than its factorization.

28673153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145746.

The product of its digits is 30240, while the sum is 35.

The square root of 28673153 is about 5354.7318326878. The cubic root of 28673153 is about 306.0730918851.

The spelling of 28673153 in words is "twenty-eight million, six hundred seventy-three thousand, one hundred fifty-three".