20346120 has 64 divisors (see below), whose sum is σ = 67824000. Its totient is φ = 5425344.

The previous prime is 20346119. The next prime is 20346121. The reversal of 20346120 is 2164302.

It is a happy number.

20346120 is a `hidden beast` number, since 20 + 34 + 612 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (20346119) and next prime (20346121).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20346093 and 20346102.

It is not an unprimeable number, because it can be changed into a prime (20346121) 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 15 ways as a sum of consecutive naturals, for example, 8340 + ... + 10499.

It is an arithmetic number, because the mean of its divisors is an integer number (1059750).

Almost surely, 2^20346120 is an apocalyptic number.

20346120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20346120 is an abundant number, since it is smaller than the sum of its proper divisors (47477880).

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

20346120 is a wasteful number, since it uses less digits than its factorization.

20346120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18859 (or 18849 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 20346120 is about 4510.6673563897. The cubic root of 20346120 is about 272.9986716515.

The spelling of 20346120 in words is "twenty million, three hundred forty-six thousand, one hundred twenty".