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7987468974 = 231331244829
BaseRepresentation
bin1110111000001011…
…10001101010101110
3202121122211110120020
413130011301222232
5112324243001344
63400331103010
7401636236362
oct73405615256
922548743506
107987468974
113429799731
12166aba1a66
139a3a76504
1455ab652a2
1531b372719
hex1dc171aae

7987468974 has 8 divisors (see below), whose sum is σ = 15974937960. Its totient is φ = 2662489656.

The previous prime is 7987468963. The next prime is 7987468981. The reversal of 7987468974 is 4798647897.

It is a sphenic number, since it is the product of 3 distinct primes.

7987468974 is an admirable number.

It is a super-2 number, since 2×79874689742 (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7987468899 and 7987468908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 665622409 + ... + 665622420.

It is an arithmetic number, because the mean of its divisors is an integer number (1996867245).

Almost surely, 27987468974 is an apocalyptic number.

7987468974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

7987468974 is a wasteful number, since it uses less digits than its factorization.

7987468974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331244834.

The product of its digits is 170698752, while the sum is 69.

The square root of 7987468974 is about 89372.6410821567. The cubic root of 7987468974 is about 1998.9552021271.

The spelling of 7987468974 in words is "seven billion, nine hundred eighty-seven million, four hundred sixty-eight thousand, nine hundred seventy-four".

Divisors: 1 2 3 6 1331244829 2662489658 3993734487 7987468974