33780104 has 8 divisors (see below), whose sum is σ = 63337710. Its totient is φ = 16890048.

The previous prime is 33780101. The next prime is 33780121. The reversal of 33780104 is 40108733.

It can be written as a sum of positive squares in only one way, i.e., 33292900 + 487204 = 5770^2 + 698^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×33780104² = 2282190852501632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33780101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2111249 + ... + 2111264.

Almost surely, 2^33780104 is an apocalyptic number.

It is an amenable number.

33780104 is a deficient number, since it is larger than the sum of its proper divisors (29557606).

33780104 is a wasteful number, since it uses less digits than its factorization.

33780104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222519 (or 4222515 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 33780104 is about 5812.0653816006. The cubic root of 33780104 is about 323.2612595461.

Adding to 33780104 its reverse (40108733), we get a palindrome (73888837).

The spelling of 33780104 in words is "thirty-three million, seven hundred eighty thousand, one hundred four".