33872037 has 4 divisors (see below), whose sum is σ = 45162720. Its totient is φ = 22581356.

The previous prime is 33872023. The next prime is 33872053. The reversal of 33872037 is 73027833.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 73027833 = 3 ⋅24342611.

It is a cyclic number.

It is not a de Polignac number, because 33872037 - 2¹⁶ = 33806501 is a prime.

It is a super-2 number, since 2×33872037² = 2294629781058738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33871989 and 33872007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33872737) 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, 5645337 + ... + 5645342.

It is an arithmetic number, because the mean of its divisors is an integer number (11290680).

Almost surely, 2^33872037 is an apocalyptic number.

It is an amenable number.

33872037 is a deficient number, since it is larger than the sum of its proper divisors (11290683).

33872037 is a wasteful number, since it uses less digits than its factorization.

33872037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11290682.

The product of its (nonzero) digits is 21168, while the sum is 33.

The square root of 33872037 is about 5819.9688143494. The cubic root of 33872037 is about 323.5542471818.

The spelling of 33872037 in words is "thirty-three million, eight hundred seventy-two thousand, thirty-seven".