Search a number
-
+
1972480 = 2852367
BaseRepresentation
bin111100001100100000000
310201012201211
413201210000
51001104410
6110135504
722523446
oct7414400
93635654
101972480
111127a54
127b1594
13540a63
14394b96
1528e68a
hex1e1900

1972480 has 72 divisors (see below), whose sum is σ = 5003712. Its totient is φ = 743424.

The previous prime is 1972471. The next prime is 1972483. The reversal of 1972480 is 842791.

It is not an unprimeable number, because it can be changed into a prime (1972483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29407 + ... + 29473.

It is an arithmetic number, because the mean of its divisors is an integer number (69496).

21972480 is an apocalyptic number.

1972480 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 1972480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2501856).

1972480 is an abundant number, since it is smaller than the sum of its proper divisors (3031232).

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

1972480 is an equidigital number, since it uses as much as digits as its factorization.

1972480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1972480 is about 1404.4500703122. The cubic root of 1972480 is about 125.4115501911.

The spelling of 1972480 in words is "one million, nine hundred seventy-two thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 23 32 40 46 64 67 80 92 115 128 134 160 184 230 256 268 320 335 368 460 536 640 670 736 920 1072 1280 1340 1472 1541 1840 2144 2680 2944 3082 3680 4288 5360 5888 6164 7360 7705 8576 10720 12328 14720 15410 17152 21440 24656 29440 30820 42880 49312 61640 85760 98624 123280 197248 246560 394496 493120 986240 1972480