20920158 has 36 divisors (see below), whose sum is σ = 52729560. Its totient is φ = 5976936.

The previous prime is 20920157. The next prime is 20920181. The reversal of 20920158 is 85102902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20920157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10978 + ... + 12741.

It is an arithmetic number, because the mean of its divisors is an integer number (1464710).

Almost surely, 2^20920158 is an apocalyptic number.

20920158 is an abundant number, since it is smaller than the sum of its proper divisors (31809402).

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

20920158 is a wasteful number, since it uses less digits than its factorization.

20920158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23741 (or 23731 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 20920158 is about 4573.8559225231. The cubic root of 20920158 is about 275.5423259223.

The spelling of 20920158 in words is "twenty million, nine hundred twenty thousand, one hundred fifty-eight".