33376421 has 4 divisors (see below), whose sum is σ = 35943852. Its totient is φ = 30808992.

The previous prime is 33376417. The next prime is 33376451. The reversal of 33376421 is 12467333.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6180196 + 27196225 = 2486^2 + 5215^2 .

It is a cyclic number.

It is not a de Polignac number, because 33376421 - 2² = 33376417 is a prime.

It is a super-2 number, since 2×33376421² = 2227970957538482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33376451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1283696 + ... + 1283721.

It is an arithmetic number, because the mean of its divisors is an integer number (8985963).

Almost surely, 2^33376421 is an apocalyptic number.

It is an amenable number.

33376421 is a deficient number, since it is larger than the sum of its proper divisors (2567431).

33376421 is a wasteful number, since it uses less digits than its factorization.

33376421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567430.

The product of its digits is 9072, while the sum is 29.

The square root of 33376421 is about 5777.2329882046. The cubic root of 33376421 is about 321.9684041114.

The spelling of 33376421 in words is "thirty-three million, three hundred seventy-six thousand, four hundred twenty-one".