Search a number
-
+
139990087080 = 23345196773359
BaseRepresentation
bin1000001001100000001…
…1110011010110101000
3111101100011001020210000
42002120003303112220
54243144430241310
6144151025223000
713054041051444
oct2023003632650
9441304036700
10139990087080
1154407833448
122316a491a60
131027c800c6c
146ac01ab824
153994e144c0
hex20980f35a8

139990087080 has 320 divisors, whose sum is σ = 496165824000. Its totient is φ = 35303164416.

The previous prime is 139990087009. The next prime is 139990087087. The reversal of 139990087080 is 80780099931.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (139990087087) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 41674441 + ... + 41677799.

It is an arithmetic number, because the mean of its divisors is an integer number (1550518200).

Almost surely, 2139990087080 is an apocalyptic number.

139990087080 is a gapful number since it is divisible by the number (10) 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 139990087080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248082912000).

139990087080 is an abundant number, since it is smaller than the sum of its proper divisors (356175736920).

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

139990087080 is a wasteful number, since it uses less digits than its factorization.

139990087080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078 (or 4065 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The spelling of 139990087080 in words is "one hundred thirty-nine billion, nine hundred ninety million, eighty-seven thousand, eighty".