33840780 has 24 divisors (see below), whose sum is σ = 94754352. Its totient is φ = 9024192.

The previous prime is 33840773. The next prime is 33840803. The reversal of 33840780 is 8704833.

It is a super-2 number, since 2×33840780² = 2290396782016800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281947 + ... + 282066.

It is an arithmetic number, because the mean of its divisors is an integer number (3948098).

Almost surely, 2^33840780 is an apocalyptic number.

33840780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33840780 is an abundant number, since it is smaller than the sum of its proper divisors (60913572).

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

33840780 is a wasteful number, since it uses less digits than its factorization.

33840780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564025 (or 564023 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 33840780 is about 5817.2828708943. The cubic root of 33840780 is about 323.4546916344.

The spelling of 33840780 in words is "thirty-three million, eight hundred forty thousand, seven hundred eighty".