Search a number
-
+
78080208 = 2438531907
BaseRepresentation
bin1001010011101…
…10100011010000
312102220212220120
410221312203100
5124442031313
611425310240
71635446043
oct451664320
9172825816
1078080208
114008a8a8
1222195380
131323a60b
14a526c5a
156cc4d23
hex4a768d0

78080208 has 40 divisors (see below), whose sum is σ = 202049568. Its totient is φ = 25982592.

The previous prime is 78080173. The next prime is 78080213. The reversal of 78080208 is 80208087.

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, 39991 + ... + 41897.

Almost surely, 278080208 is an apocalyptic number.

It is an amenable number.

78080208 is an abundant number, since it is smaller than the sum of its proper divisors (123969360).

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

78080208 is a wasteful number, since it uses less digits than its factorization.

78080208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771 (or 2765 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 78080208 is about 8836.3005833890. The cubic root of 78080208 is about 427.4122715916.

The spelling of 78080208 in words is "seventy-eight million, eighty thousand, two hundred eight".

Divisors: 1 2 3 4 6 8 12 16 24 48 853 1706 1907 2559 3412 3814 5118 5721 6824 7628 10236 11442 13648 15256 20472 22884 30512 40944 45768 91536 1626671 3253342 4880013 6506684 9760026 13013368 19520052 26026736 39040104 78080208