33011138 has 8 divisors (see below), whose sum is σ = 49686588. Its totient is φ = 16448944.

The previous prime is 33011131. The next prime is 33011159. The reversal of 33011138 is 83111033.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 32913169 + 97969 = 5737^2 + 313^2 .

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

It is not an unprimeable number, because it can be changed into a prime (33011131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27581 + ... + 28752.

Almost surely, 2^33011138 is an apocalyptic number.

33011138 is a deficient number, since it is larger than the sum of its proper divisors (16675450).

33011138 is a wasteful number, since it uses less digits than its factorization.

33011138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56628.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 33011138 is about 5745.5320032178. The cubic root of 33011138 is about 320.7895153216.

The spelling of 33011138 in words is "thirty-three million, eleven thousand, one hundred thirty-eight".