33406838 has 4 divisors (see below), whose sum is σ = 50110260. Its totient is φ = 16703418.

The previous prime is 33406831. The next prime is 33406859. The reversal of 33406838 is 83860433.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83860433 = 19 ⋅4413707.

It is a super-2 number, since 2×33406838² = 2232033650316488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33406798 and 33406807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33406831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8351708 + ... + 8351711.

It is an arithmetic number, because the mean of its divisors is an integer number (12527565).

Almost surely, 2^33406838 is an apocalyptic number.

33406838 is a deficient number, since it is larger than the sum of its proper divisors (16703422).

33406838 is a wasteful number, since it uses less digits than its factorization.

33406838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16703421.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 33406838 is about 5779.8648773133. The cubic root of 33406838 is about 322.0661811166.

The spelling of 33406838 in words is "thirty-three million, four hundred six thousand, eight hundred thirty-eight".