33380724 has 96 divisors (see below), whose sum is σ = 91276416. Its totient is φ = 9400320.

The previous prime is 33380723. The next prime is 33380759. The reversal of 33380724 is 42708333.

It is a super-2 number, since 2×33380724² = 2228545469528352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33380691 and 33380700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33380723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108579 + ... + 108885.

It is an arithmetic number, because the mean of its divisors is an integer number (950796).

Almost surely, 2^33380724 is an apocalyptic number.

33380724 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33380724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45638208).

33380724 is an abundant number, since it is smaller than the sum of its proper divisors (57895692).

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

33380724 is a wasteful number, since it uses less digits than its factorization.

33380724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 33380724 is about 5777.6053863171. The cubic root of 33380724 is about 321.9822399319.

The spelling of 33380724 in words is "thirty-three million, three hundred eighty thousand, seven hundred twenty-four".