20286154560 has 224 divisors, whose sum is σ = 76810770432. Its totient is φ = 4435200000.

The previous prime is 20286154541. The next prime is 20286154561. The reversal of 20286154560 is 6545168202.

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20286154561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88935 + ... + 220185.

Almost surely, 2^20286154560 is an apocalyptic number.

20286154560 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 20286154560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38405385216).

20286154560 is an abundant number, since it is smaller than the sum of its proper divisors (56524615872).

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

20286154560 is a wasteful number, since it uses less digits than its factorization.

20286154560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131301 (or 131291 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The spelling of 20286154560 in words is "twenty billion, two hundred eighty-six million, one hundred fifty-four thousand, five hundred sixty".