Search a number
-
+
1415920870 = 257132119689
BaseRepresentation
bin101010001100101…
…0011110011100110
310122200022020021201
41110121103303212
510344433431440
6352300033114
750042062120
oct12431236346
93580266251
101415920870
11667283341
1233623279a
13197464300
14d6098210
158448c19a
hex54653ce6

1415920870 has 48 divisors (see below), whose sum is σ = 3154070880. Its totient is φ = 448111872.

The previous prime is 1415920867. The next prime is 1415920873. The reversal of 1415920870 is 780295141.

It is an interprime number because it is at equal distance from previous prime (1415920867) and next prime (1415920873).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1415920873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48015 + ... + 71674.

It is an arithmetic number, because the mean of its divisors is an integer number (65709810).

Almost surely, 21415920870 is an apocalyptic number.

1415920870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1415920870 is an abundant number, since it is smaller than the sum of its proper divisors (1738150010).

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

1415920870 is a wasteful number, since it uses less digits than its factorization.

1415920870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119729 (or 119716 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 1415920870 is about 37628.7240017516. The cubic root of 1415920870 is about 1122.9135636481.

The spelling of 1415920870 in words is "one billion, four hundred fifteen million, nine hundred twenty thousand, eight hundred seventy".

Divisors: 1 2 5 7 10 13 14 26 35 65 70 91 130 169 182 338 455 845 910 1183 1690 2366 5915 11830 119689 239378 598445 837823 1196890 1555957 1675646 3111914 4189115 7779785 8378230 10891699 15559570 20227441 21783398 40454882 54458495 101137205 108916990 141592087 202274410 283184174 707960435 1415920870