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23430719980 = 2251171535999
BaseRepresentation
bin10101110100100101…
…000110100111101100
32020110221000220022201
4111310211012213230
5340441231014410
614433001351244
71456430555653
oct256445064754
966427026281
1023430719980
119a34037798
12465aa98524
132295398365
1411c3bac19a
1592204083a
hex5749469ec

23430719980 has 12 divisors (see below), whose sum is σ = 49204512000. Its totient is φ = 9372287984.

The previous prime is 23430719947. The next prime is 23430719989. The reversal of 23430719980 is 8991703432.

It is a self number, because there is not a number n which added to its sum of digits gives 23430719980.

It is not an unprimeable number, because it can be changed into a prime (23430719989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 585767980 + ... + 585768019.

It is an arithmetic number, because the mean of its divisors is an integer number (4100376000).

Almost surely, 223430719980 is an apocalyptic number.

23430719980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23430719980 is an abundant number, since it is smaller than the sum of its proper divisors (25773792020).

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

23430719980 is a wasteful number, since it uses less digits than its factorization.

23430719980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171536008 (or 1171536006 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 46.

The spelling of 23430719980 in words is "twenty-three billion, four hundred thirty million, seven hundred nineteen thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 20 1171535999 2343071998 4686143996 5857679995 11715359990 23430719980