33140445 has 16 divisors (see below), whose sum is σ = 57103872. Its totient is φ = 16315200.

The previous prime is 33140441. The next prime is 33140449. The reversal of 33140445 is 54404133.

It is an interprime number because it is at equal distance from previous prime (33140441) and next prime (33140449).

It is not a de Polignac number, because 33140445 - 2² = 33140441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33140441) 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, 84781 + ... + 85170.

It is an arithmetic number, because the mean of its divisors is an integer number (3568992).

Almost surely, 2^33140445 is an apocalyptic number.

It is an amenable number.

33140445 is a deficient number, since it is larger than the sum of its proper divisors (23963427).

33140445 is a wasteful number, since it uses less digits than its factorization.

33140445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169972.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 33140445 is about 5756.7738360995. The cubic root of 33140445 is about 321.2078214797.

Adding to 33140445 its reverse (54404133), we get a palindrome (87544578).

The spelling of 33140445 in words is "thirty-three million, one hundred forty thousand, four hundred forty-five".