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20130220000 = 255411372473
BaseRepresentation
bin10010101111110110…
…101100011111100000
31220221220120010111201
4102233312230133200
5312211314020000
613125300250544
71311563022022
oct225766543740
956856503451
1020130220000
11859aa91260
123a996a0a54
131b8a66c5a7
14d8d702012
157cc3de96a
hex4afdac7e0

20130220000 has 240 divisors, whose sum is σ = 55508069232. Its totient is φ = 7119360000.

The previous prime is 20130219937. The next prime is 20130220003. The reversal of 20130220000 is 2203102.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130220003) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8138764 + ... + 8141236.

Almost surely, 220130220000 is an apocalyptic number.

20130220000 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 20130220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27754034616).

20130220000 is an abundant number, since it is smaller than the sum of its proper divisors (35377849232).

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

20130220000 is a wasteful number, since it uses less digits than its factorization.

20130220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551 (or 2528 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

Adding to 20130220000 its reverse (2203102), we get a palindrome (20132423102).

The spelling of 20130220000 in words is "twenty billion, one hundred thirty million, two hundred twenty thousand".