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72023301 = 3271143227
BaseRepresentation
bin1000100101011…
…11110100000101
312000112011101200
410102233310011
5121414221201
611051413113
71533121320
oct422576405
9160464350
1072023301
1137723199
1220154199
1311bc974c
1497cb7b7
1564ca386
hex44afd05

72023301 has 12 divisors (see below), whose sum is σ = 118895712. Its totient is φ = 41156136.

The previous prime is 72023297. The next prime is 72023321. The reversal of 72023301 is 10332027.

It is not a de Polignac number, because 72023301 - 22 = 72023297 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72023321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 571551 + ... + 571676.

It is an arithmetic number, because the mean of its divisors is an integer number (9907976).

Almost surely, 272023301 is an apocalyptic number.

It is an amenable number.

72023301 is a deficient number, since it is larger than the sum of its proper divisors (46872411).

72023301 is a wasteful number, since it uses less digits than its factorization.

72023301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143240 (or 1143237 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 72023301 is about 8486.6542877626. The cubic root of 72023301 is about 416.0616375785.

Adding to 72023301 its reverse (10332027), we get a palindrome (82355328).

The spelling of 72023301 in words is "seventy-two million, twenty-three thousand, three hundred one".

Divisors: 1 3 7 9 21 63 1143227 3429681 8002589 10289043 24007767 72023301