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72886269 = 379307537
BaseRepresentation
bin1000101100000…
…10011111111101
312002011000011110
410112002133331
5122124330034
611122112233
71543344261
oct426023775
9162130143
1072886269
1138162595
12204ab679
131213c491
1499740a1
1565eade9
hex45827fd

72886269 has 8 divisors (see below), whose sum is σ = 98412160. Its totient is φ = 47975616.

The previous prime is 72886267. The next prime is 72886273. The reversal of 72886269 is 96268827.

It is a happy number.

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

It is not a de Polignac number, because 72886269 - 21 = 72886267 is a prime.

It is a super-2 number, since 2×728862692 = 10624816417480722, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 6.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72886267) 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, 153532 + ... + 154005.

It is an arithmetic number, because the mean of its divisors is an integer number (12301520).

Almost surely, 272886269 is an apocalyptic number.

72886269 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

72886269 is a deficient number, since it is larger than the sum of its proper divisors (25525891).

72886269 is a wasteful number, since it uses less digits than its factorization.

72886269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307619.

The product of its digits is 580608, while the sum is 48.

The square root of 72886269 is about 8537.3455476512. The cubic root of 72886269 is about 417.7167655362.

The spelling of 72886269 in words is "seventy-two million, eight hundred eighty-six thousand, two hundred sixty-nine".

Divisors: 1 3 79 237 307537 922611 24295423 72886269