Search a number
-
+
67869280 = 2552914627
BaseRepresentation
bin1000000101110…
…01101001100000
311201201010011001
410002321221200
5114333304110
610422401344
71452610423
oct402715140
9151633131
1067869280
1135346216
121a890254
13110a3a4b
1490299ba
155e5963a
hex40b9a60

67869280 has 48 divisors (see below), whose sum is σ = 165881520. Its totient is φ = 26209792.

The previous prime is 67869257. The next prime is 67869281. The reversal of 67869280 is 8296876.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 67869280.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67869281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2674 + ... + 11953.

It is an arithmetic number, because the mean of its divisors is an integer number (3455865).

Almost surely, 267869280 is an apocalyptic number.

It is an amenable number.

67869280 is an abundant number, since it is smaller than the sum of its proper divisors (98012240).

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

67869280 is a wasteful number, since it uses less digits than its factorization.

67869280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14671 (or 14663 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 67869280 is about 8238.2813741702. The cubic root of 67869280 is about 407.9037963616.

The spelling of 67869280 in words is "sixty-seven million, eight hundred sixty-nine thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 29 32 40 58 80 116 145 160 232 290 464 580 928 1160 2320 4640 14627 29254 58508 73135 117016 146270 234032 292540 424183 468064 585080 848366 1170160 1696732 2120915 2340320 3393464 4241830 6786928 8483660 13573856 16967320 33934640 67869280