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72425672 = 231131139191
BaseRepresentation
bin1000101000100…
…10000011001000
312001021121100022
410110102003020
5122020110142
611104200012
71536415364
oct424220310
9161247308
1072425672
1137978530
1220309008
131200a937
1498942a4
1565596d2
hex45120c8

72425672 has 64 divisors (see below), whose sum is σ = 154828800. Its totient is φ = 31464000.

The previous prime is 72425669. The next prime is 72425677. The reversal of 72425672 is 27652427.

It is not an unprimeable number, because it can be changed into a prime (72425677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379097 + ... + 379287.

It is an arithmetic number, because the mean of its divisors is an integer number (2419200).

Almost surely, 272425672 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 72425672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77414400).

72425672 is an abundant number, since it is smaller than the sum of its proper divisors (82403128).

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

72425672 is a wasteful number, since it uses less digits than its factorization.

72425672 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 digits is 47040, while the sum is 35.

The square root of 72425672 is about 8510.3273732566. The cubic root of 72425672 is about 416.8350000020.

The spelling of 72425672 in words is "seventy-two million, four hundred twenty-five thousand, six hundred seventy-two".

Divisors: 1 2 4 8 11 22 31 44 62 88 124 139 191 248 278 341 382 556 682 764 1112 1364 1528 1529 2101 2728 3058 4202 4309 5921 6116 8404 8618 11842 12232 16808 17236 23684 26549 34472 47368 47399 53098 65131 94798 106196 130262 189596 212392 260524 292039 379192 521048 584078 823019 1168156 1646038 2336312 3292076 6584152 9053209 18106418 36212836 72425672