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19372968 = 2332269069
BaseRepresentation
bin100100111100…
…1101110101000
31100110020201100
41021321232220
514424413333
61531121400
7323444646
oct111715650
940406640
1019372968
11aa3221a
1265a3260
134023bc4
142804196
151a7a213
hex1279ba8

19372968 has 24 divisors (see below), whose sum is σ = 52468650. Its totient is φ = 6457632.

The previous prime is 19372963. The next prime is 19372981. The reversal of 19372968 is 86927391.

It can be written as a sum of positive squares in only one way, i.e., 11985444 + 7387524 = 3462^2 + 2718^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (19372963) 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 5 ways as a sum of consecutive naturals, for example, 134463 + ... + 134606.

Almost surely, 219372968 is an apocalyptic number.

19372968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19372968 is an abundant number, since it is smaller than the sum of its proper divisors (33095682).

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

19372968 is a wasteful number, since it uses less digits than its factorization.

19372968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269081 (or 269074 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 19372968 is about 4401.4733896731. The cubic root of 19372968 is about 268.5748779440.

The spelling of 19372968 in words is "nineteen million, three hundred seventy-two thousand, nine hundred sixty-eight".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 269069 538138 807207 1076276 1614414 2152552 2421621 3228828 4843242 6457656 9686484 19372968