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70748972 = 2277334613
BaseRepresentation
bin1000011011110…
…00101100101100
311221010102100022
410031320230230
5121102431342
611004221312
71516233140
oct415705454
9157112308
1070748972
1136a32828
121b83a838
13118716c8
149579220
1563279d2
hex4378b2c

70748972 has 24 divisors (see below), whose sum is σ = 143440416. Its totient is φ = 29904768.

The previous prime is 70748971. The next prime is 70748981. The reversal of 70748972 is 27984707.

It is not an unprimeable number, because it can be changed into a prime (70748971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15263 + ... + 19350.

It is an arithmetic number, because the mean of its divisors is an integer number (5976684).

Almost surely, 270748972 is an apocalyptic number.

It is an amenable number.

70748972 is an abundant number, since it is smaller than the sum of its proper divisors (72691444).

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

70748972 is a wasteful number, since it uses less digits than its factorization.

70748972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34697 (or 34695 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The square root of 70748972 is about 8411.2408121513. The cubic root of 70748972 is about 413.5931887209.

The spelling of 70748972 in words is "seventy million, seven hundred forty-eight thousand, nine hundred seventy-two".

Divisors: 1 2 4 7 14 28 73 146 292 511 1022 2044 34613 69226 138452 242291 484582 969164 2526749 5053498 10106996 17687243 35374486 70748972