33161430 has 32 divisors (see below), whose sum is σ = 80896608. Its totient is φ = 8697600.

The previous prime is 33161419. The next prime is 33161437. The reversal of 33161430 is 3416133.

It is a junction number, because it is equal to n+sod(n) for n = 33161397 and 33161406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33161437) 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, 7231 + ... + 10890.

It is an arithmetic number, because the mean of its divisors is an integer number (2528019).

Almost surely, 2^33161430 is an apocalyptic number.

33161430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

33161430 is an abundant number, since it is smaller than the sum of its proper divisors (47735178).

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

33161430 is a wasteful number, since it uses less digits than its factorization.

33161430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18192.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 33161430 is about 5758.5961830988. The cubic root of 33161430 is about 321.2756049580.

Adding to 33161430 its reverse (3416133), we get a palindrome (36577563).

The spelling of 33161430 in words is "thirty-three million, one hundred sixty-one thousand, four hundred thirty".