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92371321 = 7213732
BaseRepresentation
bin1011000000101…
…11100101111001
320102210221122001
411200113211321
5142121340241
613055501001
72201100100
oct540274571
9212727561
1092371321
1148160a39
1226b27761
13161a23b3
14c3a7037
158199431
hex5817979

92371321 has 9 divisors (see below), whose sum is σ = 107530671. Its totient is φ = 79117752.

The previous prime is 92371313. The next prime is 92371333. The reversal of 92371321 is 12317329.

The square root of 92371321 is 9611.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 91298025 + 1073296 = 9555^2 + 1036^2 .

It is not a de Polignac number, because 92371321 - 23 = 92371313 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 92371321.

It is not an unprimeable number, because it can be changed into a prime (92371021) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 66591 + ... + 67963.

Almost surely, 292371321 is an apocalyptic number.

92371321 is the 9611-st square number.

92371321 is the 4806-th centered octagonal number.

It is an amenable number.

92371321 is a deficient number, since it is larger than the sum of its proper divisors (15159350).

92371321 is an frugal number, since it uses more digits than its factorization.

92371321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2760 (or 1380 counting only the distinct ones).

The product of its digits is 2268, while the sum is 28.

The cubic root of 92371321 is about 452.0422745460.

The spelling of 92371321 in words is "ninety-two million, three hundred seventy-one thousand, three hundred twenty-one".

Divisors: 1 7 49 1373 9611 67277 1885129 13195903 92371321