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67928552 = 238491069
BaseRepresentation
bin1000000110010…
…00000111101000
311201211010110022
410003020013220
5114342203202
610423540012
71453245266
oct403100750
9151733408
1067928552
11353867aa
121a8ba608
13110c4a13
149043436
155e6bea2
hex40c81e8

67928552 has 8 divisors (see below), whose sum is σ = 127366050. Its totient is φ = 33964272.

The previous prime is 67928551. The next prime is 67928557. The reversal of 67928552 is 25582976.

It can be written as a sum of positive squares in only one way, i.e., 64416676 + 3511876 = 8026^2 + 1874^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×679285522 = 9228576353633408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67928551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4245527 + ... + 4245542.

Almost surely, 267928552 is an apocalyptic number.

It is an amenable number.

67928552 is a deficient number, since it is larger than the sum of its proper divisors (59437498).

67928552 is a wasteful number, since it uses less digits than its factorization.

67928552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8491075 (or 8491071 counting only the distinct ones).

The product of its digits is 302400, while the sum is 44.

The square root of 67928552 is about 8241.8779413432. The cubic root of 67928552 is about 408.0225061275.

The spelling of 67928552 in words is "sixty-seven million, nine hundred twenty-eight thousand, five hundred fifty-two".

Divisors: 1 2 4 8 8491069 16982138 33964276 67928552