33999740 has 48 divisors (see below), whose sum is σ = 75841920. Its totient is φ = 12767040.

The previous prime is 33999737. The next prime is 33999743. The reversal of 33999740 is 4799933.

It is a happy number.

33999740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (33999737) and next prime (33999743).

It is a junction number, because it is equal to n+sod(n) for n = 33999691 and 33999700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33999743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49439 + ... + 50121.

It is an arithmetic number, because the mean of its divisors is an integer number (1580040).

Almost surely, 2^33999740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33999740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37920960).

33999740 is an abundant number, since it is smaller than the sum of its proper divisors (41842180).

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

33999740 is a wasteful number, since it uses less digits than its factorization.

33999740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 44.

The square root of 33999740 is about 5830.9295999866. The cubic root of 33999740 is about 323.9603543422.

The spelling of 33999740 in words is "thirty-three million, nine hundred ninety-nine thousand, seven hundred forty".