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73325993 = 135640461
BaseRepresentation
bin1000101111011…
…01110110101001
312002222100100112
410113231312221
5122232412433
611135344105
71550155256
oct427556651
9162870315
1073325993
11384329a4
1220682035
1312264680
149a4a42d
156686348
hex45edda9

73325993 has 4 divisors (see below), whose sum is σ = 78966468. Its totient is φ = 67685520.

The previous prime is 73325957. The next prime is 73326013. The reversal of 73325993 is 39952337.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39952337 = 62696373.

It can be written as a sum of positive squares in 2 ways, for example, as 11042329 + 62283664 = 3323^2 + 7892^2 .

It is a cyclic number.

It is not a de Polignac number, because 73325993 - 214 = 73309609 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 73325993.

It is not an unprimeable number, because it can be changed into a prime (73325953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2820218 + ... + 2820243.

It is an arithmetic number, because the mean of its divisors is an integer number (19741617).

Almost surely, 273325993 is an apocalyptic number.

It is an amenable number.

73325993 is a deficient number, since it is larger than the sum of its proper divisors (5640475).

73325993 is a wasteful number, since it uses less digits than its factorization.

73325993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5640474.

The product of its digits is 153090, while the sum is 41.

The square root of 73325993 is about 8563.0597919202. The cubic root of 73325993 is about 418.5551124612. Note that the first 3 decimals are identical.

The spelling of 73325993 in words is "seventy-three million, three hundred twenty-five thousand, nine hundred ninety-three".

Divisors: 1 13 5640461 73325993