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74840168 = 23134761251
BaseRepresentation
bin1000111010111…
…11100001101000
312012211021102002
410131133201220
5123124341133
611232030132
71566062624
oct435374150
9165737362
1074840168
1139277587
1221092348
1312674930
149d22184
156884ce8
hex475f868

74840168 has 64 divisors (see below), whose sum is σ = 157489920. Its totient is φ = 33120000.

The previous prime is 74840149. The next prime is 74840179. The reversal of 74840168 is 86104847.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 298043 + ... + 298293.

It is an arithmetic number, because the mean of its divisors is an integer number (2460780).

Almost surely, 274840168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74840168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78744960).

74840168 is an abundant number, since it is smaller than the sum of its proper divisors (82649752).

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

74840168 is a wasteful number, since it uses less digits than its factorization.

74840168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 74840168 is about 8651.0212113946. The cubic root of 74840168 is about 421.4165473047.

The spelling of 74840168 in words is "seventy-four million, eight hundred forty thousand, one hundred sixty-eight".

Divisors: 1 2 4 8 13 26 47 52 61 94 104 122 188 244 251 376 488 502 611 793 1004 1222 1586 2008 2444 2867 3172 3263 4888 5734 6344 6526 11468 11797 13052 15311 22936 23594 26104 30622 37271 47188 61244 74542 94376 122488 149084 153361 199043 298168 306722 398086 613444 719617 796172 1226888 1439234 1592344 2878468 5756936 9355021 18710042 37420084 74840168