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690241104672 = 25371027144501
BaseRepresentation
bin10100000101101011001…
…00110110101100100000
32102222122002102011001020
422002311210312230200
542302103210322142
61245031542205440
7100603550404440
oct12026544665440
92388562364036
10690241104672
11246803122149
12b1934423880
13501216c9372
142559d1c4120
1512e4c472cec
hexa0b5936b20

690241104672 has 48 divisors (see below), whose sum is σ = 2070723316032. Its totient is φ = 197211744000.

The previous prime is 690241104647. The next prime is 690241104689. The reversal of 690241104672 is 276401142096.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 513571579 + ... + 513572922.

It is an arithmetic number, because the mean of its divisors is an integer number (43140069084).

Almost surely, 2690241104672 is an apocalyptic number.

It is an amenable number.

690241104672 is an abundant number, since it is smaller than the sum of its proper divisors (1380482211360).

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

690241104672 is a wasteful number, since it uses less digits than its factorization.

690241104672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1027144521 (or 1027144513 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 690241104672 in words is "six hundred ninety billion, two hundred forty-one million, one hundred four thousand, six hundred seventy-two".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 84 96 112 168 224 336 672 1027144501 2054289002 3081433503 4108578004 6162867006 7190011507 8217156008 12325734012 14380023014 16434312016 21570034521 24651468024 28760046028 32868624032 43140069042 49302936048 57520092056 86280138084 98605872096 115040184112 172560276168 230080368224 345120552336 690241104672