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72053949 = 3112183453
BaseRepresentation
bin1000100101101…
…11010010111101
312000120201102210
410102313102331
5121421211244
611052211033
71533306552
oct422672275
9160521383
1072053949
1137744220
1220169a79
1311c0a696
1497d8a29
1564d44b9
hex44b74bd

72053949 has 8 divisors (see below), whose sum is σ = 104805792. Its totient is φ = 43669040.

The previous prime is 72053941. The next prime is 72053953. The reversal of 72053949 is 94935027.

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

It is a cyclic number.

It is not a de Polignac number, because 72053949 - 23 = 72053941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72053941) 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, 1091694 + ... + 1091759.

It is an arithmetic number, because the mean of its divisors is an integer number (13100724).

Almost surely, 272053949 is an apocalyptic number.

It is an amenable number.

72053949 is a deficient number, since it is larger than the sum of its proper divisors (32751843).

72053949 is a wasteful number, since it uses less digits than its factorization.

72053949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183467.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 72053949 is about 8488.4597542782. The cubic root of 72053949 is about 416.1206446342.

The spelling of 72053949 in words is "seventy-two million, fifty-three thousand, nine hundred forty-nine".

Divisors: 1 3 11 33 2183453 6550359 24017983 72053949