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70972097 = 761712341
BaseRepresentation
bin1000011101011…
…11001011000001
311221112202102012
410032233023001
5121132101342
611013102305
71521152510
oct416571301
9157482365
1070972097
1137075429
121b927995
131191c131
1495d6677
15636db82
hex43af2c1

70972097 has 16 divisors (see below), whose sum is σ = 83637504. Its totient is φ = 58968000.

The previous prime is 70972081. The next prime is 70972117. The reversal of 70972097 is 79027907.

It is a happy number.

It is not a de Polignac number, because 70972097 - 24 = 70972081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70972037) 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 15 ways as a sum of consecutive naturals, for example, 29147 + ... + 31487.

It is an arithmetic number, because the mean of its divisors is an integer number (5227344).

Almost surely, 270972097 is an apocalyptic number.

It is an amenable number.

70972097 is a deficient number, since it is larger than the sum of its proper divisors (12665407).

70972097 is a wasteful number, since it uses less digits than its factorization.

70972097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2480.

The product of its (nonzero) digits is 55566, while the sum is 41.

The square root of 70972097 is about 8424.4938720377. The cubic root of 70972097 is about 414.0275231222.

The spelling of 70972097 in words is "seventy million, nine hundred seventy-two thousand, ninety-seven".

Divisors: 1 7 61 71 427 497 2341 4331 16387 30317 142801 166211 999607 1163477 10138871 70972097