20471604400 has 120 divisors (see below), whose sum is σ = 53171284320. Its totient is φ = 7529502720.

The previous prime is 20471604367. The next prime is 20471604451. The reversal of 20471604400 is 440617402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1360116 + ... + 1375084.

It is an arithmetic number, because the mean of its divisors is an integer number (443094036).

Almost surely, 2^20471604400 is an apocalyptic number.

20471604400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20471604400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26585642160).

20471604400 is an abundant number, since it is smaller than the sum of its proper divisors (32699679920).

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

20471604400 is a wasteful number, since it uses less digits than its factorization.

20471604400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15263 (or 15252 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The spelling of 20471604400 in words is "twenty billion, four hundred seventy-one million, six hundred four thousand, four hundred".