33457442 has 16 divisors (see below), whose sum is σ = 52950240. Its totient is φ = 15811488.

The previous prime is 33457429. The next prime is 33457471. The reversal of 33457442 is 24475433.

It is a super-2 number, since 2×33457442² = 2238800850366728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33457399 and 33457408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22733 + ... + 24159.

It is an arithmetic number, because the mean of its divisors is an integer number (3309390).

Almost surely, 2^33457442 is an apocalyptic number.

33457442 is a deficient number, since it is larger than the sum of its proper divisors (19492798).

33457442 is a wasteful number, since it uses less digits than its factorization.

33457442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2065.

The product of its digits is 40320, while the sum is 32.

The square root of 33457442 is about 5784.2408317773. The cubic root of 33457442 is about 322.2287188455.

Subtracting from 33457442 its reverse (24475433), we obtain a square (8982009 = 2997²).

The spelling of 33457442 in words is "thirty-three million, four hundred fifty-seven thousand, four hundred forty-two".