20420358 has 24 divisors (see below), whose sum is σ = 47509272. Its totient is φ = 5834304.

The previous prime is 20420357. The next prime is 20420359. The reversal of 20420358 is 85302402.

It is an interprime number because it is at equal distance from previous prime (20420357) and next prime (20420359).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20420357) 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 11 ways as a sum of consecutive naturals, for example, 34435 + ... + 35022.

It is an arithmetic number, because the mean of its divisors is an integer number (1979553).

Almost surely, 2^20420358 is an apocalyptic number.

20420358 is an abundant number, since it is smaller than the sum of its proper divisors (27088914).

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

20420358 is a wasteful number, since it uses less digits than its factorization.

20420358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69476 (or 69469 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 20420358 is about 4518.8890227577. The cubic root of 20420358 is about 273.3303036877.

The spelling of 20420358 in words is "twenty million, four hundred twenty thousand, three hundred fifty-eight".