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1442301380 = 225138096857
BaseRepresentation
bin101010111110111…
…1100010111000100
310201111221111112122
41111331330113010
510423212121010
6355041305112
750512234202
oct12575742704
93644844478
101442301380
11680161413
12343035198
1319ca6c990
14d97a4072
158694d855
hex55f7c5c4

1442301380 has 48 divisors (see below), whose sum is σ = 3266328240. Its totient is φ = 531806208.

The previous prime is 1442301379. The next prime is 1442301383. The reversal of 1442301380 is 831032441.

It can be written as a sum of positive squares in 8 ways, for example, as 218980804 + 1223320576 = 14798^2 + 34976^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1442301383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206912 + ... + 213768.

It is an arithmetic number, because the mean of its divisors is an integer number (68048505).

Almost surely, 21442301380 is an apocalyptic number.

1442301380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1442301380 is an abundant number, since it is smaller than the sum of its proper divisors (1824026860).

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

1442301380 is a wasteful number, since it uses less digits than its factorization.

1442301380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7688 (or 7686 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 1442301380 is about 37977.6431601541. The cubic root of 1442301380 is about 1129.8444926580.

The spelling of 1442301380 in words is "one billion, four hundred forty-two million, three hundred one thousand, three hundred eighty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 809 1618 3236 4045 6857 8090 10517 13714 16180 21034 27428 34285 42068 52585 68570 89141 105170 137140 178282 210340 356564 445705 891410 1782820 5547313 11094626 22189252 27736565 55473130 72115069 110946260 144230138 288460276 360575345 721150690 1442301380