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69042974 = 27111334487
BaseRepresentation
bin1000001110110…
…00001100011110
311210220202011012
410013120030132
5120133333344
610503455222
71465566320
oct407301436
9153822135
1069042974
1135a78010
121b157512
13113c5040
149253610
1560dc29e
hex41d831e

69042974 has 32 divisors (see below), whose sum is σ = 139055616. Its totient is φ = 24829920.

The previous prime is 69042973. The next prime is 69042989. The reversal of 69042974 is 47924096.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69042973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15242 + ... + 19245.

It is an arithmetic number, because the mean of its divisors is an integer number (4345488).

Almost surely, 269042974 is an apocalyptic number.

69042974 is an abundant number, since it is smaller than the sum of its proper divisors (70012642).

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

69042974 is a wasteful number, since it uses less digits than its factorization.

69042974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34520.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 69042974 is about 8309.2101911072. The cubic root of 69042974 is about 410.2417253927.

The spelling of 69042974 in words is "sixty-nine million, forty-two thousand, nine hundred seventy-four".

Divisors: 1 2 7 11 13 14 22 26 77 91 143 154 182 286 1001 2002 34487 68974 241409 379357 448331 482818 758714 896662 2655499 3138317 4931641 5310998 6276634 9863282 34521487 69042974