33384021 has 12 divisors (see below), whose sum is σ = 48926976. Its totient is φ = 20232520.

The previous prime is 33383981. The next prime is 33384031. The reversal of 33384021 is 12048333.

It is not a de Polignac number, because 33384021 - 2¹¹ = 33381973 is a prime.

It is a super-2 number, since 2×33384021² = 2228985716256882, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33383982 and 33384000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33384031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45621 + ... + 46346.

It is an arithmetic number, because the mean of its divisors is an integer number (4077248).

Almost surely, 2^33384021 is an apocalyptic number.

It is an amenable number.

33384021 is a deficient number, since it is larger than the sum of its proper divisors (15542955).

33384021 is a wasteful number, since it uses less digits than its factorization.

33384021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91992 (or 91981 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 33384021 is about 5777.8907050930. The cubic root of 33384021 is about 321.9928402662.

It can be divided in two parts, 333840 and 21, that multiplied together give a triangular number (7010640 = T₃₇₄₄).

The spelling of 33384021 in words is "thirty-three million, three hundred eighty-four thousand, twenty-one".