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72049677 = 3713924683
BaseRepresentation
bin1000100101101…
…10010000001101
312000120111120120
410102312100031
5121421042202
611052135153
71533261240
oct422662015
9160514516
1072049677
1137740a97
12201674b9
1311c0875b
1497d7257
1564d30bc
hex44b640d

72049677 has 16 divisors (see below), whose sum is σ = 110584320. Its totient is φ = 40873392.

The previous prime is 72049667. The next prime is 72049687. The reversal of 72049677 is 77694027.

It is an interprime number because it is at equal distance from previous prime (72049667) and next prime (72049687).

It is not a de Polignac number, because 72049677 - 28 = 72049421 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72049667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9423 + ... + 15260.

It is an arithmetic number, because the mean of its divisors is an integer number (6911520).

Almost surely, 272049677 is an apocalyptic number.

It is an amenable number.

72049677 is a deficient number, since it is larger than the sum of its proper divisors (38534643).

72049677 is a wasteful number, since it uses less digits than its factorization.

72049677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24832.

The product of its (nonzero) digits is 148176, while the sum is 42.

The square root of 72049677 is about 8488.2081147908. The cubic root of 72049677 is about 416.1124206920.

The spelling of 72049677 in words is "seventy-two million, forty-nine thousand, six hundred seventy-seven".

Divisors: 1 3 7 21 139 417 973 2919 24683 74049 172781 518343 3430937 10292811 24016559 72049677