20246320 has 40 divisors (see below), whose sum is σ = 49845024. Its totient is φ = 7621632.

The previous prime is 20246309. The next prime is 20246329. The reversal of 20246320 is 2364202.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (20246329) 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 7 ways as a sum of consecutive naturals, for example, 6084 + ... + 8803.

Almost surely, 2^20246320 is an apocalyptic number.

20246320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20246320 is an abundant number, since it is smaller than the sum of its proper divisors (29598704).

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

20246320 is a wasteful number, since it uses less digits than its factorization.

20246320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14917 (or 14911 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 20246320 is about 4499.5910925327. The cubic root of 20246320 is about 272.5515768041.

The spelling of 20246320 in words is "twenty million, two hundred forty-six thousand, three hundred twenty".