20340727420 has 48 divisors (see below), whose sum is σ = 46033894368. Its totient is φ = 7505107200.

The previous prime is 20340727399. The next prime is 20340727453. The reversal of 20340727420 is 2472704302.

It is a super-3 number, since 3×20340727420³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 350302 + ... + 404218.

It is an arithmetic number, because the mean of its divisors is an integer number (959039466).

Almost surely, 2^20340727420 is an apocalyptic number.

20340727420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20340727420 is an abundant number, since it is smaller than the sum of its proper divisors (25693166948).

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

20340727420 is a wasteful number, since it uses less digits than its factorization.

20340727420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55390 (or 55388 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 31.

The spelling of 20340727420 in words is "twenty billion, three hundred forty million, seven hundred twenty-seven thousand, four hundred twenty".