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72745088948 = 22721978724821
BaseRepresentation
bin100001110111111110…
…0011111011110110100
320221202201201101222122
41003233330133132310
52142440220321243
653230231415112
75153456024300
oct1035774373664
9227681641878
1072745088948
112893a785024
1212122224498
136b2408a03c
143741424d00
151d5b600668
hex10eff1f7b4

72745088948 has 72 divisors (see below), whose sum is σ = 156086693280. Its totient is φ = 29496882240.

The previous prime is 72745088921. The next prime is 72745088959. The reversal of 72745088948 is 84988054727.

It is a congruent number.

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, 2918378 + ... + 2943198.

It is an arithmetic number, because the mean of its divisors is an integer number (2167870740).

Almost surely, 272745088948 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 72745088948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78043346640).

72745088948 is an abundant number, since it is smaller than the sum of its proper divisors (83341604332).

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

72745088948 is a wasteful number, since it uses less digits than its factorization.

72745088948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25645 (or 25636 counting only the distinct ones).

The product of its (nonzero) digits is 36126720, while the sum is 62.

The spelling of 72745088948 in words is "seventy-two billion, seven hundred forty-five million, eighty-eight thousand, nine hundred forty-eight".

Divisors: 1 2 4 7 14 19 28 38 49 76 98 133 196 266 532 787 931 1574 1862 3148 3724 5509 11018 14953 22036 24821 29906 38563 49642 59812 77126 99284 104671 154252 173747 209342 347494 418684 471599 694988 732697 943198 1216229 1465394 1886396 2432458 2930788 3301193 4864916 6602386 13204772 19534127 23108351 39068254 46216702 78136508 92433404 136738889 273477778 371148413 546955556 742296826 957172223 1484593652 1914344446 2598038891 3828688892 5196077782 10392155564 18186272237 36372544474 72745088948