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69884031 = 373327811
BaseRepresentation
bin1000010101001…
…01100001111111
311212111110212110
410022211201333
5120342242111
610533505103
71506001350
oct412454177
9155443773
1069884031
11364a19a8
121b4a2193
131162aac9
1493d1d27
1562065a6
hex42a587f

69884031 has 8 divisors (see below), whose sum is σ = 106489984. Its totient is φ = 39933720.

The previous prime is 69884029. The next prime is 69884041. The reversal of 69884031 is 13048896.

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

It is not a de Polignac number, because 69884031 - 21 = 69884029 is a prime.

It is a super-2 number, since 2×698840312 = 9767555577617922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69884041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1663885 + ... + 1663926.

It is an arithmetic number, because the mean of its divisors is an integer number (13311248).

Almost surely, 269884031 is an apocalyptic number.

69884031 is a deficient number, since it is larger than the sum of its proper divisors (36605953).

69884031 is a wasteful number, since it uses less digits than its factorization.

69884031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3327821.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 69884031 is about 8359.6669192020. Note that the first 3 decimals coincide. The cubic root of 69884031 is about 411.9008130698.

The spelling of 69884031 in words is "sixty-nine million, eight hundred eighty-four thousand, thirty-one".

Divisors: 1 3 7 21 3327811 9983433 23294677 69884031