33806742 has 16 divisors (see below), whose sum is σ = 67860912. Its totient is φ = 11227680.

The previous prime is 33806741. The next prime is 33806743. The reversal of 33806742 is 24760833.

It is an interprime number because it is at equal distance from previous prime (33806741) and next prime (33806743).

It is a super-2 number, since 2×33806742² = 2285791609309128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33806741) 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, 8509 + ... + 11832.

It is an arithmetic number, because the mean of its divisors is an integer number (4241307).

Almost surely, 2^33806742 is an apocalyptic number.

33806742 is an abundant number, since it is smaller than the sum of its proper divisors (34054170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33806742 is a wasteful number, since it uses less digits than its factorization.

33806742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20623.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 33806742 is about 5814.3565422151. The cubic root of 33806742 is about 323.3462086723.

The spelling of 33806742 in words is "thirty-three million, eight hundred six thousand, seven hundred forty-two".