33057830 has 16 divisors (see below), whose sum is σ = 64081584. Its totient is φ = 12205920.

The previous prime is 33057823. The next prime is 33057833. The reversal of 33057830 is 3875033.

It is a junction number, because it is equal to n+sod(n) for n = 33057793 and 33057802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33057833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127016 + ... + 127275.

It is an arithmetic number, because the mean of its divisors is an integer number (4005099).

Almost surely, 2^33057830 is an apocalyptic number.

33057830 is a deficient number, since it is larger than the sum of its proper divisors (31023754).

33057830 is a wasteful number, since it uses less digits than its factorization.

33057830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254311.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 33057830 is about 5749.5938987028. The cubic root of 33057830 is about 320.9406890221.

The spelling of 33057830 in words is "thirty-three million, fifty-seven thousand, eight hundred thirty".