20124004340 has 48 divisors (see below), whose sum is σ = 46378410624. Its totient is φ = 7273987200.

The previous prime is 20124004331. The next prime is 20124004363. The reversal of 20124004340 is 4340042102.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 237131 + ... + 310610.

It is an arithmetic number, because the mean of its divisors is an integer number (966216888).

Almost surely, 2^20124004340 is an apocalyptic number.

20124004340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20124004340 is an abundant number, since it is smaller than the sum of its proper divisors (26254406284).

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

20124004340 is a wasteful number, since it uses less digits than its factorization.

20124004340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547928 (or 547926 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20124004340 its reverse (4340042102), we get a palindrome (24464046442).

The spelling of 20124004340 in words is "twenty billion, one hundred twenty-four million, four thousand, three hundred forty".