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11969841 = 313306919
BaseRepresentation
bin101101101010…
…010100110001
3211112010112110
4231222110301
511031013331
61104315533
7203512332
oct55522461
924463473
1011969841
116836134
124012ba9
132631360
141838289
1510b6946
hexb6a531

11969841 has 8 divisors (see below), whose sum is σ = 17187520. Its totient is φ = 7366032.

The previous prime is 11969807. The next prime is 11969851. The reversal of 11969841 is 14896911.

11969841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11969841 - 26 = 11969777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 306919 = 11969841 / (1 + 1 + 9 + 6 + 9 + 8 + 4 + 1).

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11969841.

It is not an unprimeable number, because it can be changed into a prime (11969801) 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, 153421 + ... + 153498.

It is an arithmetic number, because the mean of its divisors is an integer number (2148440).

Almost surely, 211969841 is an apocalyptic number.

It is an amenable number.

11969841 is a deficient number, since it is larger than the sum of its proper divisors (5217679).

11969841 is a wasteful number, since it uses less digits than its factorization.

11969841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306935.

The product of its digits is 15552, while the sum is 39.

The square root of 11969841 is about 3459.7457999107. The cubic root of 11969841 is about 228.7508907368.

The spelling of 11969841 in words is "eleven million, nine hundred sixty-nine thousand, eight hundred forty-one".

Divisors: 1 3 13 39 306919 920757 3989947 11969841