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68038752 = 253838539
BaseRepresentation
bin1000000111000…
…11000001100000
311202000201121210
410003203001200
5114404220002
610430150120
71454214465
oct403430140
9152021553
1068038752
1135451581
121a952340
1311132c22
14907166c
155e8e96c
hex40e3060

68038752 has 48 divisors (see below), whose sum is σ = 180774720. Its totient is φ = 22403712.

The previous prime is 68038723. The next prime is 68038787. The reversal of 68038752 is 25783086.

It is a tau number, because it is divible by the number of its divisors (48).

It is a self number, because there is not a number n which added to its sum of digits gives 68038752.

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, 3699 + ... + 12237.

It is an arithmetic number, because the mean of its divisors is an integer number (3766140).

Almost surely, 268038752 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 68038752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90387360).

68038752 is an abundant number, since it is smaller than the sum of its proper divisors (112735968).

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

68038752 is a wasteful number, since it uses less digits than its factorization.

68038752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8635 (or 8627 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 68038752 is about 8248.5606017050. The cubic root of 68038752 is about 408.2430309081.

The spelling of 68038752 in words is "sixty-eight million, thirty-eight thousand, seven hundred fifty-two".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 83 96 166 249 332 498 664 996 1328 1992 2656 3984 7968 8539 17078 25617 34156 51234 68312 102468 136624 204936 273248 409872 708737 819744 1417474 2126211 2834948 4252422 5669896 8504844 11339792 17009688 22679584 34019376 68038752