33864157 has 4 divisors (see below), whose sum is σ = 33938716. Its totient is φ = 33789600.

The previous prime is 33864151. The next prime is 33864163. The reversal of 33864157 is 75146833.

33864157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (33864151) and next prime (33864163).

It can be written as a sum of positive squares in 2 ways, for example, as 22934521 + 10929636 = 4789^2 + 3306^2 .

It is a cyclic number.

It is not a de Polignac number, because 33864157 - 2¹⁵ = 33831389 is a prime.

It is a super-2 number, since 2×33864157² = 2293562258641298, 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 (33864151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36594 + ... + 37507.

It is an arithmetic number, because the mean of its divisors is an integer number (8484679).

Almost surely, 2^33864157 is an apocalyptic number.

It is an amenable number.

33864157 is a deficient number, since it is larger than the sum of its proper divisors (74559).

33864157 is an equidigital number, since it uses as much as digits as its factorization.

33864157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74558.

The product of its digits is 60480, while the sum is 37.

The square root of 33864157 is about 5819.2917953992. The cubic root of 33864157 is about 323.5291546529.

The spelling of 33864157 in words is "thirty-three million, eight hundred sixty-four thousand, one hundred fifty-seven".