33981954 has 16 divisors (see below), whose sum is σ = 69544992. Its totient is φ = 11063808.

The previous prime is 33981953. The next prime is 33981973. The reversal of 33981954 is 45918933.

33981954 is nontrivially palindromic in base 16.

It is not an unprimeable number, because it can be changed into a prime (33981953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65599 + ... + 66114.

It is an arithmetic number, because the mean of its divisors is an integer number (4346562).

Almost surely, 2^33981954 is an apocalyptic number.

33981954 is an abundant number, since it is smaller than the sum of its proper divisors (35563038).

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

33981954 is a wasteful number, since it uses less digits than its factorization.

33981954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131761.

The product of its digits is 116640, while the sum is 42.

The square root of 33981954 is about 5829.4042577265. The cubic root of 33981954 is about 323.9038542642.

The spelling of 33981954 in words is "thirty-three million, nine hundred eighty-one thousand, nine hundred fifty-four".