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1215054093 = 31129243781
BaseRepresentation
bin100100001101100…
…0100000100001101
310010200100010212110
41020123010010031
54442023212333
6320322454233
742052534521
oct11033040415
93120303773
101215054093
11573959140
1229ab04379
13164965626
14b752bd81
1571a11063
hex486c410d

1215054093 has 24 divisors (see below), whose sum is σ = 1830437856. Its totient is φ = 710987200.

The previous prime is 1215054067. The next prime is 1215054119. The reversal of 1215054093 is 3904505121.

It is an interprime number because it is at equal distance from previous prime (1215054067) and next prime (1215054119).

It is not a de Polignac number, because 1215054093 - 213 = 1215045901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1215054093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215054013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5863 + ... + 49643.

It is an arithmetic number, because the mean of its divisors is an integer number (76268244).

Almost surely, 21215054093 is an apocalyptic number.

It is an amenable number.

1215054093 is a deficient number, since it is larger than the sum of its proper divisors (615383763).

1215054093 is a wasteful number, since it uses less digits than its factorization.

1215054093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43853 (or 43824 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1215054093 is about 34857.6260379275. The cubic root of 1215054093 is about 1067.0838267523.

The spelling of 1215054093 in words is "one billion, two hundred fifteen million, fifty-four thousand, ninety-three".

Divisors: 1 3 11 29 33 87 319 841 957 2523 9251 27753 43781 131343 481591 1269649 1444773 3808947 13966139 36819821 41898417 110459463 405018031 1215054093