20046420 has 48 divisors (see below), whose sum is σ = 62368320. Its totient is φ = 5345568.

The previous prime is 20046419. The next prime is 20046421. The reversal of 20046420 is 2464002.

20046420 is a `hidden beast` number, since 20 + 0 + 4 + 642 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (20046419) and next prime (20046421).

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 = 20046393 and 20046402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20046421) 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, 18022 + ... + 19101.

It is an arithmetic number, because the mean of its divisors is an integer number (1299340).

Almost surely, 2^20046420 is an apocalyptic number.

20046420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20046420 is an abundant number, since it is smaller than the sum of its proper divisors (42321900).

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

20046420 is a wasteful number, since it uses less digits than its factorization.

20046420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37141 (or 37133 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20046420 is about 4477.3228608176. The cubic root of 20046420 is about 271.6516048374.

The spelling of 20046420 in words is "twenty million, forty-six thousand, four hundred twenty".