33872723 has 4 divisors (see below), whose sum is σ = 34788240. Its totient is φ = 32957208.

The previous prime is 33872719. The next prime is 33872737. The reversal of 33872723 is 32727833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32727833 = 691 ⋅47363.

It is a cyclic number.

It is not a de Polignac number, because 33872723 - 2² = 33872719 is a prime.

It is a super-2 number, since 2×33872723² = 2294722726869458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33872743) 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, 457703 + ... + 457776.

It is an arithmetic number, because the mean of its divisors is an integer number (8697060).

Almost surely, 2^33872723 is an apocalyptic number.

33872723 is a deficient number, since it is larger than the sum of its proper divisors (915517).

33872723 is an equidigital number, since it uses as much as digits as its factorization.

33872723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915516.

The product of its digits is 42336, while the sum is 35.

The square root of 33872723 is about 5820.0277490747. The cubic root of 33872723 is about 323.5564314488.

The spelling of 33872723 in words is "thirty-three million, eight hundred seventy-two thousand, seven hundred twenty-three".