20403402300 has 54 divisors (see below), whose sum is σ = 63953333808. Its totient is φ = 5440907040.

The previous prime is 20403402287. The next prime is 20403402307. The reversal of 20403402300 is 320430402.

20403402300 is a `hidden beast` number, since 20 + 4 + 0 + 340 + 2 + 300 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20403402307) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11334324 + ... + 11336123.

Almost surely, 2^20403402300 is an apocalyptic number.

20403402300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20403402300 is an abundant number, since it is smaller than the sum of its proper divisors (43549931508).

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

20403402300 is a wasteful number, since it uses less digits than its factorization.

20403402300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22670467 (or 22670457 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 20403402300 its reverse (320430402), we get a palindrome (20723832702).

The spelling of 20403402300 in words is "twenty billion, four hundred three million, four hundred two thousand, three hundred".