20014155 has 32 divisors (see below), whose sum is σ = 40665600. Its totient is φ = 9148896.

The previous prime is 20014153. The next prime is 20014171. The reversal of 20014155 is 55141002.

It is not a de Polignac number, because 20014155 - 2¹ = 20014153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20014153) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 9645 + ... + 11534.

It is an arithmetic number, because the mean of its divisors is an integer number (1270800).

Almost surely, 2^20014155 is an apocalyptic number.

20014155 is an abundant number, since it is smaller than the sum of its proper divisors (20651445).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20014155 is a wasteful number, since it uses less digits than its factorization.

20014155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21200 (or 21194 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 20014155 is about 4473.7182521925. The cubic root of 20014155 is about 271.5057841935.

Adding to 20014155 its reverse (55141002), we get a palindrome (75155157).

The spelling of 20014155 in words is "twenty million, fourteen thousand, one hundred fifty-five".