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73028813 = 1113510691
BaseRepresentation
bin1000101101001…
…01010011001101
312002102020200212
410112211103031
5122143410223
611125132205
71544506664
oct426452315
9162366625
1073028813
113824a6a0
122055a065
131218c320
1499adddb
156628278
hex45a54cd

73028813 has 8 divisors (see below), whose sum is σ = 85796256. Its totient is φ = 61282800.

The previous prime is 73028797. The next prime is 73028833. The reversal of 73028813 is 31882037.

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

It is a cyclic number.

It is not a de Polignac number, because 73028813 - 24 = 73028797 is a prime.

It is a super-3 number, since 3×730288133 (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 73028813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73028833) 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 7 ways as a sum of consecutive naturals, for example, 255203 + ... + 255488.

It is an arithmetic number, because the mean of its divisors is an integer number (10724532).

Almost surely, 273028813 is an apocalyptic number.

It is an amenable number.

73028813 is a deficient number, since it is larger than the sum of its proper divisors (12767443).

73028813 is a wasteful number, since it uses less digits than its factorization.

73028813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510715.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 73028813 is about 8545.6897322568. The cubic root of 73028813 is about 417.9888983873.

The spelling of 73028813 in words is "seventy-three million, twenty-eight thousand, eight hundred thirteen".

Divisors: 1 11 13 143 510691 5617601 6638983 73028813