33792421 has 8 divisors (see below), whose sum is σ = 36437240. Its totient is φ = 31154112.

The previous prime is 33792401. The next prime is 33792457. The reversal of 33792421 is 12429733.

33792421 = 4110² + 4111².

It can be written as a sum of positive squares in 4 ways, for example, as 16900321 + 16892100 = 4111^2 + 4110^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 33792421 - 2⁹ = 33791909 is a prime.

It is a super-2 number, since 2×33792421² = 2283855434082482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33792401) 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, 17995 + ... + 19783.

It is an arithmetic number, because the mean of its divisors is an integer number (4554655).

Almost surely, 2^33792421 is an apocalyptic number.

33792421 is the 4111-st centered square number.

It is an amenable number.

33792421 is a deficient number, since it is larger than the sum of its proper divisors (2644819).

33792421 is a wasteful number, since it uses less digits than its factorization.

33792421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3255.

The product of its digits is 9072, while the sum is 31.

The square root of 33792421 is about 5813.1248911407. The cubic root of 33792421 is about 323.3005442595.

The spelling of 33792421 in words is "thirty-three million, seven hundred ninety-two thousand, four hundred twenty-one".