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748225928 = 231925092
BaseRepresentation
bin101100100110010…
…000010110001000
31221010220211000102
4230212100112020
53013021212203
6202125024532
724353546462
oct5446202610
91833824012
10748225928
1135439923a
1218a6b5148
13bc026148
147152d132
1545a4b888
hex2c990588

748225928 has 36 divisors (see below), whose sum is σ = 1483562565. Its totient is φ = 353726496.

The previous prime is 748225927. The next prime is 748225931. The reversal of 748225928 is 829522847.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 665743204 + 82482724 = 25802^2 + 9082^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=19342.

It is a super-2 number, since 2×7482259282 = 1119684078662922368, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (748225927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1469738 + ... + 1470246.

Almost surely, 2748225928 is an apocalyptic number.

It is an amenable number.

748225928 is a deficient number, since it is larger than the sum of its proper divisors (735336637).

748225928 is an equidigital number, since it uses as much as digits as its factorization.

748225928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1062 (or 530 counting only the distinct ones).

The product of its digits is 645120, while the sum is 47.

The square root of 748225928 is about 27353.7187234204. The cubic root of 748225928 is about 907.8433524330.

The spelling of 748225928 in words is "seven hundred forty-eight million, two hundred twenty-five thousand, nine hundred twenty-eight".

Divisors: 1 2 4 8 19 38 76 152 361 509 722 1018 1444 2036 2888 4072 9671 19342 38684 77368 183749 259081 367498 518162 734996 1036324 1469992 2072648 4922539 9845078 19690156 39380312 93528241 187056482 374112964 748225928