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72069041 = 116551731
BaseRepresentation
bin1000100101110…
…10111110110001
312000121111010202
410102322332301
5121422202131
611052404545
71533401552
oct422727661
9160544122
1072069041
11377545a0
1220176755
1311c14505
149800329
1564d8bcb
hex44bafb1

72069041 has 4 divisors (see below), whose sum is σ = 78620784. Its totient is φ = 65517300.

The previous prime is 72069037. The next prime is 72069043. The reversal of 72069041 is 14096027.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14096027 = 111281457.

It is a cyclic number.

It is not a de Polignac number, because 72069041 - 22 = 72069037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72068995 and 72069013.

It is not an unprimeable number, because it can be changed into a prime (72069043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3275855 + ... + 3275876.

It is an arithmetic number, because the mean of its divisors is an integer number (19655196).

Almost surely, 272069041 is an apocalyptic number.

It is an amenable number.

72069041 is a deficient number, since it is larger than the sum of its proper divisors (6551743).

72069041 is a wasteful number, since it uses less digits than its factorization.

72069041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6551742.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 72069041 is about 8489.3486793746. The cubic root of 72069041 is about 416.1496953406.

The spelling of 72069041 in words is "seventy-two million, sixty-nine thousand, forty-one".

Divisors: 1 11 6551731 72069041