33821794 has 4 divisors (see below), whose sum is σ = 50732694. Its totient is φ = 16910896.

The previous prime is 33821783. The next prime is 33821797. The reversal of 33821794 is 49712833.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49712833 = 431 ⋅115343.

It can be written as a sum of positive squares in only one way, i.e., 33814225 + 7569 = 5815^2 + 87^2 .

It is a super-2 number, since 2×33821794² = 2287827498756872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33821797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8455447 + ... + 8455450.

Almost surely, 2^33821794 is an apocalyptic number.

33821794 is a deficient number, since it is larger than the sum of its proper divisors (16910900).

33821794 is a wasteful number, since it uses less digits than its factorization.

33821794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16910899.

The product of its digits is 36288, while the sum is 37.

The square root of 33821794 is about 5815.6507804372. The cubic root of 33821794 is about 323.3941900778.

The spelling of 33821794 in words is "thirty-three million, eight hundred twenty-one thousand, seven hundred ninety-four".