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1230313784 = 23759372371
BaseRepresentation
bin100100101010101…
…0001100100111000
310011202001102020012
41021111101210320
510004430020114
6322025521052
742326331440
oct11125214470
93152042205
101230313784
11581530a57
122a4043188
13167b7922b
14b9581120
157302763e
hex49551938

1230313784 has 32 divisors (see below), whose sum is σ = 2681078400. Its totient is φ = 518339040.

The previous prime is 1230313727. The next prime is 1230313787. The reversal of 1230313784 is 4873130321.

It is a self number, because there is not a number n which added to its sum of digits gives 1230313784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230313787) 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, 182882 + ... + 189489.

It is an arithmetic number, because the mean of its divisors is an integer number (83783700).

Almost surely, 21230313784 is an apocalyptic number.

1230313784 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1230313784 is an abundant number, since it is smaller than the sum of its proper divisors (1450764616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1230313784 is a wasteful number, since it uses less digits than its factorization.

1230313784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372443 (or 372439 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1230313784 is about 35075.8290564885. The cubic root of 1230313784 is about 1071.5323733607.

The spelling of 1230313784 in words is "one billion, two hundred thirty million, three hundred thirteen thousand, seven hundred eighty-four".

Divisors: 1 2 4 7 8 14 28 56 59 118 236 413 472 826 1652 3304 372371 744742 1489484 2606597 2978968 5213194 10426388 20852776 21969889 43939778 87879556 153789223 175759112 307578446 615156892 1230313784