33278045 has 8 divisors (see below), whose sum is σ = 39998040. Its totient is φ = 26579520.

The previous prime is 33278041. The next prime is 33278053. The reversal of 33278045 is 54087233.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3912484 + 29365561 = 1978^2 + 5419^2 .

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

It is not a de Polignac number, because 33278045 - 2² = 33278041 is a prime.

It is a super-2 number, since 2×33278045² = 2214856558044050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33278041) 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, 1730 + ... + 8339.

It is an arithmetic number, because the mean of its divisors is an integer number (4999755).

Almost surely, 2^33278045 is an apocalyptic number.

It is an amenable number.

33278045 is a deficient number, since it is larger than the sum of its proper divisors (6719995).

33278045 is a wasteful number, since it uses less digits than its factorization.

33278045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10735.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 33278045 is about 5768.7125946783. The cubic root of 33278045 is about 321.6517620711.

The spelling of 33278045 in words is "thirty-three million, two hundred seventy-eight thousand, forty-five".