Search a number
-
+
69930240 = 283518211
BaseRepresentation
bin1000010101100…
…00110100000000
311212120211020220
410022300310000
5120400231430
610534503040
71506253152
oct412606400
9155524226
1069930240
1136523696
121b504a80
1311645b53
149404ad2
156215110
hex42b0d00

69930240 has 72 divisors (see below), whose sum is σ = 223351968. Its totient is φ = 18647040.

The previous prime is 69930229. The next prime is 69930251. The reversal of 69930240 is 4203996.

It is an interprime number because it is at equal distance from previous prime (69930229) and next prime (69930251).

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, 5266 + ... + 12945.

Almost surely, 269930240 is an apocalyptic number.

69930240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

69930240 is an abundant number, since it is smaller than the sum of its proper divisors (153421728).

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

69930240 is a wasteful number, since it uses less digits than its factorization.

69930240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18235 (or 18221 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 69930240 is about 8362.4302687676. The cubic root of 69930240 is about 411.9915793044.

The spelling of 69930240 in words is "sixty-nine million, nine hundred thirty thousand, two hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 256 320 384 480 640 768 960 1280 1920 3840 18211 36422 54633 72844 91055 109266 145688 182110 218532 273165 291376 364220 437064 546330 582752 728440 874128 1092660 1165504 1456880 1748256 2185320 2331008 2913760 3496512 4370640 4662016 5827520 6993024 8741280 11655040 13986048 17482560 23310080 34965120 69930240