33433140 has 48 divisors (see below), whose sum is σ = 100816128. Its totient is φ = 8229504.

The previous prime is 33433133. The next prime is 33433157. The reversal of 33433140 is 4133433.

It is a super-2 number, since 2×33433140² = 2235549700519200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20652 + ... + 22211.

It is an arithmetic number, because the mean of its divisors is an integer number (2100336).

Almost surely, 2^33433140 is an apocalyptic number.

33433140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33433140 is an abundant number, since it is smaller than the sum of its proper divisors (67382988).

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

33433140 is a wasteful number, since it uses less digits than its factorization.

33433140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42888 (or 42886 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 33433140 is about 5782.1397423445. The cubic root of 33433140 is about 322.1506824048.

Adding to 33433140 its reverse (4133433), we get a palindrome (37566573).

The spelling of 33433140 in words is "thirty-three million, four hundred thirty-three thousand, one hundred forty".