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72069825 = 352960931
BaseRepresentation
bin1000100101110…
…11001011000001
312000121112012210
410102323023001
5121422213300
611052412333
71533404052
oct422731301
9160545183
1072069825
1137755143
12201770a9
1311c14989
149800729
1564d9050
hex44bb2c1

72069825 has 12 divisors (see below), whose sum is σ = 119155568. Its totient is φ = 38437200.

The previous prime is 72069799. The next prime is 72069827. The reversal of 72069825 is 52896027.

It is a happy number.

It is not a de Polignac number, because 72069825 - 217 = 71938753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72069827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 480391 + ... + 480540.

Almost surely, 272069825 is an apocalyptic number.

72069825 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

It is an amenable number.

72069825 is a deficient number, since it is larger than the sum of its proper divisors (47085743).

72069825 is a wasteful number, since it uses less digits than its factorization.

72069825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 960944 (or 960939 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 72069825 is about 8489.3948547585. The cubic root of 72069825 is about 416.1512043574.

The spelling of 72069825 in words is "seventy-two million, sixty-nine thousand, eight hundred twenty-five".

Divisors: 1 3 5 15 25 75 960931 2882793 4804655 14413965 24023275 72069825