33628423 has 4 divisors (see below), whose sum is σ = 35398360. Its totient is φ = 31858488.

The previous prime is 33628403. The next prime is 33628433. The reversal of 33628423 is 32482633.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32482633 = 37 ⋅877909.

It is a cyclic number.

It is not a de Polignac number, because 33628423 - 2⁹ = 33627911 is a prime.

It is a super-2 number, since 2×33628423² = 2261741666933858, 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 (33628403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884940 + ... + 884977.

It is an arithmetic number, because the mean of its divisors is an integer number (8849590).

Almost surely, 2^33628423 is an apocalyptic number.

33628423 is a deficient number, since it is larger than the sum of its proper divisors (1769937).

33628423 is a wasteful number, since it uses less digits than its factorization.

33628423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769936.

The product of its digits is 20736, while the sum is 31.

The square root of 33628423 is about 5799.0018968785. The cubic root of 33628423 is about 322.7766926128.

The spelling of 33628423 in words is "thirty-three million, six hundred twenty-eight thousand, four hundred twenty-three".