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18071367090 = 2357212293447
BaseRepresentation
bin10000110101001000…
…110010110110110010
31201122102110120021020
4100311020302312302
5244002232221330
612145112040310
71206553041300
oct206510626662
951572416236
1018071367090
1177338a7627
123604093096
13191cc5a42a
14c360c7270
1570b7a4210
hex435232db2

18071367090 has 48 divisors (see below), whose sum is σ = 50452310592. Its totient is φ = 4130597856.

The previous prime is 18071367073. The next prime is 18071367103. The reversal of 18071367090 is 9076317081.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6145254 + ... + 6148193.

It is an arithmetic number, because the mean of its divisors is an integer number (1051089804).

Almost surely, 218071367090 is an apocalyptic number.

18071367090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18071367090 is an abundant number, since it is smaller than the sum of its proper divisors (32380943502).

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

18071367090 is a wasteful number, since it uses less digits than its factorization.

18071367090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12293471 (or 12293464 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 42.

The spelling of 18071367090 in words is "eighteen billion, seventy-one million, three hundred sixty-seven thousand, ninety".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 49 70 98 105 147 210 245 294 490 735 1470 12293447 24586894 36880341 61467235 73760682 86054129 122934470 172108258 184401705 258162387 368803410 430270645 516324774 602378903 860541290 1204757806 1290811935 1807136709 2581623870 3011894515 3614273418 6023789030 9035683545 18071367090