20074155 has 8 divisors (see below), whose sum is σ = 32118672. Its totient is φ = 10706208.

The previous prime is 20074151. The next prime is 20074169. The reversal of 20074155 is 55147002.

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

It is not a de Polignac number, because 20074155 - 2² = 20074151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20074151) by changing a digit.

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, 669124 + ... + 669153.

It is an arithmetic number, because the mean of its divisors is an integer number (4014834).

Almost surely, 2^20074155 is an apocalyptic number.

20074155 is a deficient number, since it is larger than the sum of its proper divisors (12044517).

20074155 is a wasteful number, since it uses less digits than its factorization.

20074155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338285.

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 20074155 is about 4480.4190652215. The cubic root of 20074155 is about 271.7768272841.

The spelling of 20074155 in words is "twenty million, seventy-four thousand, one hundred fifty-five".