20155334 has 4 divisors (see below), whose sum is σ = 30233004. Its totient is φ = 10077666.

The previous prime is 20155327. The next prime is 20155357. The reversal of 20155334 is 43355102.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 5038832 + ... + 5038835.

It is an arithmetic number, because the mean of its divisors is an integer number (7558251).

Almost surely, 2^20155334 is an apocalyptic number.

20155334 is a deficient number, since it is larger than the sum of its proper divisors (10077670).

20155334 is a wasteful number, since it uses less digits than its factorization.

20155334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10077669.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 20155334 is about 4489.4692336623. The cubic root of 20155334 is about 272.1426857337.

The spelling of 20155334 in words is "twenty million, one hundred fifty-five thousand, three hundred thirty-four".