Search a number
-
+
2978083872000 = 28325341252209
BaseRepresentation
bin101011010101100011101…
…000011001110100000000
3101112200221210012121201200
4223111203220121310000
5342243103432401000
610200040212501200
7425105460146136
oct53254350316400
911480853177650
102978083872000
11a48aa87863a6
1240120a31a800
13187aa8195823
14a41d6349756
1552700681500
hex2b563a19d00

2978083872000 has 432 divisors, whose sum is σ = 10977424108560. Its totient is φ = 774782976000.

The previous prime is 2978083871977. The next prime is 2978083872007. The reversal of 2978083872000 is 2783808792.

It can be written as a sum of positive squares in 8 ways, for example, as 918009264384 + 2060074607616 = 958128^2 + 1435296^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978083872007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11681896 + ... + 11934104.

It is an arithmetic number, because the mean of its divisors is an integer number (25410703955).

Almost surely, 22978083872000 is an apocalyptic number.

2978083872000 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 2978083872000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5488712054280).

2978083872000 is an abundant number, since it is smaller than the sum of its proper divisors (7999340236560).

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

2978083872000 is a wasteful number, since it uses less digits than its factorization.

2978083872000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252287 (or 252260 counting only the distinct ones).

The product of its (nonzero) digits is 2709504, while the sum is 54.

The spelling of 2978083872000 in words is "two trillion, nine hundred seventy-eight billion, eighty-three million, eight hundred seventy-two thousand".