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12938496870 = 2351333175633
BaseRepresentation
bin11000000110011000…
…11100101101100110
31020101201001202000210
430003030130231212
5202444223344440
65535512520250
7635425260135
oct140314345546
936351052023
1012938496870
11553a498222
1226110b0086
1312b2719810
148aa51991c
1550ad53a80
hex30331cb66

12938496870 has 32 divisors (see below), whose sum is σ = 33441039072. Its totient is φ = 3184860672.

The previous prime is 12938496821. The next prime is 12938496971. The reversal of 12938496870 is 7869483921.

It is a self number, because there is not a number n which added to its sum of digits gives 12938496870.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16587427 + ... + 16588206.

It is an arithmetic number, because the mean of its divisors is an integer number (1045032471).

Almost surely, 212938496870 is an apocalyptic number.

12938496870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12938496870 is an abundant number, since it is smaller than the sum of its proper divisors (20502542202).

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

12938496870 is a wasteful number, since it uses less digits than its factorization.

12938496870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33175656.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 12938496870 in words is "twelve billion, nine hundred thirty-eight million, four hundred ninety-six thousand, eight hundred seventy".

Divisors: 1 2 3 5 6 10 13 15 26 30 39 65 78 130 195 390 33175633 66351266 99526899 165878165 199053798 331756330 431283229 497634495 862566458 995268990 1293849687 2156416145 2587699374 4312832290 6469248435 12938496870