33870073 has 4 divisors (see below), whose sum is σ = 34962688. Its totient is φ = 32777460.

The previous prime is 33870019. The next prime is 33870079. The reversal of 33870073 is 37007833.

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: 37007833 = 53 ⋅698261.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33870073 is a prime.

It is a super-2 number, since 2×33870073² = 2294363690050658, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1092583 = 33870073 / (3 + 3 + 8 + 7 + 0 + 0 + 7 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33870079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546261 + ... + 546322.

It is an arithmetic number, because the mean of its divisors is an integer number (8740672).

Almost surely, 2^33870073 is an apocalyptic number.

It is an amenable number.

33870073 is a deficient number, since it is larger than the sum of its proper divisors (1092615).

33870073 is a wasteful number, since it uses less digits than its factorization.

33870073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092614.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 33870073 is about 5819.8000824771. The cubic root of 33870073 is about 323.5479935197.

The spelling of 33870073 in words is "thirty-three million, eight hundred seventy thousand, seventy-three".