Search a number
-
+
20022530880 = 26351110118773
BaseRepresentation
bin10010101001011011…
…111001001101000000
31220200101220221210210
4102221123321031000
5312001231442010
613110452154120
71306114463412
oct225133711500
956611827723
1020022530880
118545218890
123a69608940
131b71266011
14d7d2ac9b2
157c2c1bb20
hex4a96f9340

20022530880 has 224 divisors, whose sum is σ = 70041138048. Its totient is φ = 4805632000.

The previous prime is 20022530849. The next prime is 20022530893. The reversal of 20022530880 is 8803522002.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1057174 + ... + 1075946.

It is an arithmetic number, because the mean of its divisors is an integer number (312683652).

Almost surely, 220022530880 is an apocalyptic number.

20022530880 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 20022530880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35020569024).

20022530880 is an abundant number, since it is smaller than the sum of its proper divisors (50018607168).

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

20022530880 is a wasteful number, since it uses less digits than its factorization.

20022530880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18905 (or 18895 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The spelling of 20022530880 in words is "twenty billion, twenty-two million, five hundred thirty thousand, eight hundred eighty".