33049813 has 8 divisors (see below), whose sum is σ = 34949376. Its totient is φ = 31202400.

The previous prime is 33049811. The next prime is 33049817. The reversal of 33049813 is 31894033.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33049813 - 2¹ = 33049811 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33049811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11731 + ... + 14272.

It is an arithmetic number, because the mean of its divisors is an integer number (4368672).

Almost surely, 2^33049813 is an apocalyptic number.

It is an amenable number.

33049813 is a deficient number, since it is larger than the sum of its proper divisors (1899563).

33049813 is a wasteful number, since it uses less digits than its factorization.

33049813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26075.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 33049813 is about 5748.8966767546. The cubic root of 33049813 is about 320.9147426777.

The spelling of 33049813 in words is "thirty-three million, forty-nine thousand, eight hundred thirteen".