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13207985476 = 227282092
BaseRepresentation
bin11000100110100000…
…11101110101000100
31021002111011011220021
430103100131311010
5204022221013401
610022340544524
7645210011200
oct142320356504
937074134807
1013207985476
115668621a84
1226873b2144
1313264c392a
148d4229b00
155248372a1
hex31341dd44

13207985476 has 27 divisors (see below), whose sum is σ = 26890960509. Its totient is φ = 5659875648.

The previous prime is 13207985471. The next prime is 13207985477. The reversal of 13207985476 is 67458970231.

The square root of 13207985476 is 114926.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 913611076 + 12294374400 = 30226^2 + 110880^2 .

It is not an unprimeable number, because it can be changed into a prime (13207985471) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1604860 + ... + 1613068.

It is a 1-persistent number, because it is pandigital, but 2⋅13207985476 = 26415970952 is not.

Almost surely, 213207985476 is an apocalyptic number.

13207985476 is the 114926-th square number.

It is an amenable number.

13207985476 is an abundant number, since it is smaller than the sum of its proper divisors (13682975033).

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

13207985476 is an frugal number, since it uses more digits than its factorization.

13207985476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16436 (or 8218 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 13207985476 in words is "thirteen billion, two hundred seven million, nine hundred eighty-five thousand, four hundred seventy-six".

Divisors: 1 2 4 7 14 28 49 98 196 8209 16418 32836 57463 114926 229852 402241 804482 1608964 67387681 134775362 269550724 471713767 943427534 1886855068 3301996369 6603992738 13207985476