20301400240 has 80 divisors (see below), whose sum is σ = 52335998496. Its totient is φ = 7261286400.

The previous prime is 20301400201. The next prime is 20301400247. The reversal of 20301400240 is 4200410302.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (20301400247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135417 + ... + 242776.

Almost surely, 2^20301400240 is an apocalyptic number.

20301400240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20301400240 is an abundant number, since it is smaller than the sum of its proper divisors (32034598256).

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

20301400240 is a wasteful number, since it uses less digits than its factorization.

20301400240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378278 (or 378272 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 20301400240 its reverse (4200410302), we get a palindrome (24501810542).

The spelling of 20301400240 in words is "twenty billion, three hundred one million, four hundred thousand, two hundred forty".