33724742 has 8 divisors (see below), whose sum is σ = 50956776. Its totient is φ = 16739152.

The previous prime is 33724741. The next prime is 33724751. The reversal of 33724742 is 24742733.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×33724742² = 2274716445933128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33724699 and 33724708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33724741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61268 + ... + 61815.

It is an arithmetic number, because the mean of its divisors is an integer number (6369597).

Almost surely, 2^33724742 is an apocalyptic number.

33724742 is a deficient number, since it is larger than the sum of its proper divisors (17232034).

33724742 is a wasteful number, since it uses less digits than its factorization.

33724742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123222.

The product of its digits is 28224, while the sum is 32.

The square root of 33724742 is about 5807.3007499182. The cubic root of 33724742 is about 323.0845660352.

Subtracting from 33724742 its reverse (24742733), we obtain a square (8982009 = 2997²).

The spelling of 33724742 in words is "thirty-three million, seven hundred twenty-four thousand, seven hundred forty-two".