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72214953 = 3191266929
BaseRepresentation
bin1000100110111…
…10100110101001
312000212220021220
410103132212221
5121441334303
611055452253
71534550136
oct423364651
9160786256
1072214953
1137844188
1220227089
1311c65a55
14983b58d
156517053
hex44de9a9

72214953 has 8 divisors (see below), whose sum is σ = 101354400. Its totient is φ = 45609408.

The previous prime is 72214951. The next prime is 72214969. The reversal of 72214953 is 35941227.

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

It is not a de Polignac number, because 72214953 - 21 = 72214951 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72214951) 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, 633408 + ... + 633521.

It is an arithmetic number, because the mean of its divisors is an integer number (12669300).

Almost surely, 272214953 is an apocalyptic number.

It is an amenable number.

72214953 is a deficient number, since it is larger than the sum of its proper divisors (29139447).

72214953 is a wasteful number, since it uses less digits than its factorization.

72214953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266951.

The product of its digits is 15120, while the sum is 33.

The square root of 72214953 is about 8497.9381616955. The cubic root of 72214953 is about 416.4303535378.

The spelling of 72214953 in words is "seventy-two million, two hundred fourteen thousand, nine hundred fifty-three".

Divisors: 1 3 19 57 1266929 3800787 24071651 72214953