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68107732 = 22711397557
BaseRepresentation
bin1000000111100…
…11110111010100
311202011020020121
410003303313110
5114413421412
610431441324
71454622550
oct403636724
9152136217
1068107732
1135499390
121a986244
1311158444
14908c860
155ea5107
hex40f3dd4

68107732 has 48 divisors (see below), whose sum is σ = 149240448. Its totient is φ = 26421120.

The previous prime is 68107727. The next prime is 68107783. The reversal of 68107732 is 23770186.

It is a congruent number.

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, 121998 + ... + 122554.

It is an arithmetic number, because the mean of its divisors is an integer number (3109176).

Almost surely, 268107732 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 68107732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74620224).

68107732 is an abundant number, since it is smaller than the sum of its proper divisors (81132716).

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

68107732 is a wasteful number, since it uses less digits than its factorization.

68107732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 68107732 is about 8252.7408780356. The cubic root of 68107732 is about 408.3809478652.

The spelling of 68107732 in words is "sixty-eight million, one hundred seven thousand, seven hundred thirty-two".

Divisors: 1 2 4 7 11 14 22 28 44 77 154 308 397 557 794 1114 1588 2228 2779 3899 4367 5558 6127 7798 8734 11116 12254 15596 17468 24508 30569 42889 61138 85778 122276 171556 221129 442258 884516 1547903 2432419 3095806 4864838 6191612 9729676 17026933 34053866 68107732