[go: up one dir, main page]

Search a number
-
+
2989680 = 243512457
BaseRepresentation
bin1011011001111001110000
312121220001220
423121321300
51231132210
6144025040
734261161
oct13317160
95556056
102989680
111762211
121002180
13808a55
1457b768
153e0c70
hex2d9e70

2989680 has 40 divisors (see below), whose sum is σ = 9268752. Its totient is φ = 797184.

The previous prime is 2989673. The next prime is 2989691. The reversal of 2989680 is 869892.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5989 + ... + 6468.

22989680 is an apocalyptic number.

2989680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2989680 is an abundant number, since it is smaller than the sum of its proper divisors (6279072).

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

2989680 is a wasteful number, since it uses less digits than its factorization.

2989680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12473 (or 12467 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 2989680 is about 1729.0691137141. The cubic root of 2989680 is about 144.0593890834.

The spelling of 2989680 in words is "two million, nine hundred eighty-nine thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 12457 24914 37371 49828 62285 74742 99656 124570 149484 186855 199312 249140 298968 373710 498280 597936 747420 996560 1494840 2989680