33456021 has 16 divisors (see below), whose sum is σ = 45889536. Its totient is φ = 21668976.

The previous prime is 33455993. The next prime is 33456047. The reversal of 33456021 is 12065433.

It is a happy number.

It is not a de Polignac number, because 33456021 - 2⁹ = 33455509 is a prime.

It is a super-2 number, since 2×33456021² = 2238610682304882, which contains 22 as substring.

33456021 is a modest number, since divided by 6021 gives 3345 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 33455982 and 33456000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33456721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28186 + ... + 29348.

It is an arithmetic number, because the mean of its divisors is an integer number (2868096).

Almost surely, 2^33456021 is an apocalyptic number.

It is an amenable number.

33456021 is a deficient number, since it is larger than the sum of its proper divisors (12433515).

33456021 is a wasteful number, since it uses less digits than its factorization.

33456021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 33456021 is about 5784.1179967217. The cubic root of 33456021 is about 322.2241568959.

The spelling of 33456021 in words is "thirty-three million, four hundred fifty-six thousand, twenty-one".