20073155 has 8 divisors (see below), whose sum is σ = 24322272. Its totient is φ = 15902208.

The previous prime is 20073143. The next prime is 20073161. The reversal of 20073155 is 55137002.

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

It is a cyclic number.

It is not a de Polignac number, because 20073155 - 2⁶ = 20073091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20073155.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18974 + ... + 20003.

It is an arithmetic number, because the mean of its divisors is an integer number (3040284).

Almost surely, 2^20073155 is an apocalyptic number.

20073155 is a deficient number, since it is larger than the sum of its proper divisors (4249117).

20073155 is a wasteful number, since it uses less digits than its factorization.

20073155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39085.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 20073155 is about 4480.3074671277. The cubic root of 20073155 is about 271.7723143280.

The spelling of 20073155 in words is "twenty million, seventy-three thousand, one hundred fifty-five".