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74970028 = 2273186371
BaseRepresentation
bin1000111011111…
…11001110101100
312020001212112201
410131333032230
5123143020103
611234511244
71600143340
oct435771654
9166055481
1074970028
1139356101
1221135524
13126bba83
149d57620
1568ad51d
hex477f3ac

74970028 has 24 divisors (see below), whose sum is σ = 154778624. Its totient is φ = 31093200.

The previous prime is 74970013. The next prime is 74970047. The reversal of 74970028 is 82007947.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42318 + ... + 44053.

Almost surely, 274970028 is an apocalyptic number.

It is an amenable number.

74970028 is an abundant number, since it is smaller than the sum of its proper divisors (79808596).

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

74970028 is a wasteful number, since it uses less digits than its factorization.

74970028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86413 (or 86411 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 37.

The square root of 74970028 is about 8658.5234307011. The cubic root of 74970028 is about 421.6601488019.

The spelling of 74970028 in words is "seventy-four million, nine hundred seventy thousand, twenty-eight".

Divisors: 1 2 4 7 14 28 31 62 124 217 434 868 86371 172742 345484 604597 1209194 2418388 2677501 5355002 10710004 18742507 37485014 74970028