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70810992 = 2432770249
BaseRepresentation
bin1000011100001…
…11110101110000
311221020120102100
410032013311300
5121111422432
611005420400
71516612020
oct416076560
9157216370
1070810992
1136a7538a
121b86a700
13118939c5
149593a80
15633b07c
hex4387d70

70810992 has 60 divisors (see below), whose sum is σ = 226486000. Its totient is φ = 20231424.

The previous prime is 70810991. The next prime is 70811003. The reversal of 70810992 is 29901807.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70810991) 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 11 ways as a sum of consecutive naturals, for example, 34117 + ... + 36132.

Almost surely, 270810992 is an apocalyptic number.

70810992 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

70810992 is an abundant number, since it is smaller than the sum of its proper divisors (155675008).

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

70810992 is a wasteful number, since it uses less digits than its factorization.

70810992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70270 (or 70261 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 70810992 is about 8414.9267376490. The cubic root of 70810992 is about 413.7140081810.

The spelling of 70810992 in words is "seventy million, eight hundred ten thousand, nine hundred ninety-two".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 36 42 48 56 63 72 84 112 126 144 168 252 336 504 1008 70249 140498 210747 280996 421494 491743 561992 632241 842988 983486 1123984 1264482 1475229 1685976 1966972 2528964 2950458 3371952 3933944 4425687 5057928 5900916 7867888 8851374 10115856 11801832 17702748 23603664 35405496 70810992