33122730 has 32 divisors (see below), whose sum is σ = 79704000. Its totient is φ = 8809472.

The previous prime is 33122729. The next prime is 33122731. The reversal of 33122730 is 3722133.

It is an interprime number because it is at equal distance from previous prime (33122729) and next prime (33122731).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33122697 and 33122706.

It is not an unprimeable number, because it can be changed into a prime (33122731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12241 + ... + 14699.

It is an arithmetic number, because the mean of its divisors is an integer number (2490750).

Almost surely, 2^33122730 is an apocalyptic number.

33122730 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33122730 is an abundant number, since it is smaller than the sum of its proper divisors (46581270).

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

33122730 is a wasteful number, since it uses less digits than its factorization.

33122730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2918.

The product of its (nonzero) digits is 756, while the sum is 21.

The square root of 33122730 is about 5755.2350082338. The cubic root of 33122730 is about 321.1505781250.

Adding to 33122730 its reverse (3722133), we get a palindrome (36844863).

The spelling of 33122730 in words is "thirty-three million, one hundred twenty-two thousand, seven hundred thirty".