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78275909230 = 2531252502933
BaseRepresentation
bin100100011100110011…
…0111001011001101110
321111001011221012002021
41020321212321121232
52240302113043410
655543124220354
75440515151621
oct1107146713156
9244034835067
1078275909230
113021878a182
121320653a6ba
1374c5ba216c
143b07bc1db8
152081e5beda
hex12399b966e

78275909230 has 16 divisors (see below), whose sum is σ = 145441689984. Its totient is φ = 30300351840.

The previous prime is 78275909209. The next prime is 78275909237. The reversal of 78275909230 is 3290957287.

It is a super-2 number, since 2×782759092302 (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78275909237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126251157 + ... + 126251776.

It is an arithmetic number, because the mean of its divisors is an integer number (9090105624).

Almost surely, 278275909230 is an apocalyptic number.

78275909230 is a deficient number, since it is larger than the sum of its proper divisors (67165780754).

78275909230 is a wasteful number, since it uses less digits than its factorization.

78275909230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252502971.

The product of its (nonzero) digits is 1905120, while the sum is 52.

The spelling of 78275909230 in words is "seventy-eight billion, two hundred seventy-five million, nine hundred nine thousand, two hundred thirty".

Divisors: 1 2 5 10 31 62 155 310 252502933 505005866 1262514665 2525029330 7827590923 15655181846 39137954615 78275909230