20374155 has 12 divisors (see below), whose sum is σ = 35315280. Its totient is φ = 10866192.

The previous prime is 20374141. The next prime is 20374163. The reversal of 20374155 is 55147302.

It is a happy number.

It is not a de Polignac number, because 20374155 - 2⁴ = 20374139 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 226335 + ... + 226424.

It is an arithmetic number, because the mean of its divisors is an integer number (2942940).

Almost surely, 2^20374155 is an apocalyptic number.

20374155 is a deficient number, since it is larger than the sum of its proper divisors (14941125).

20374155 is a wasteful number, since it uses less digits than its factorization.

20374155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452770 (or 452767 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 20374155 is about 4513.7739199034. The cubic root of 20374155 is about 273.1240027577.

The spelling of 20374155 in words is "twenty million, three hundred seventy-four thousand, one hundred fifty-five".