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30481879484 = 22723241719583
BaseRepresentation
bin11100011000110111…
…001001000110111100
32220200100000220202102
4130120313021012330
5444411330120414
622000404244232
72126240462210
oct343067110674
986610026672
1030481879484
1111a22254241
125aa83a0678
132b4a1743a4
141692444940
15bd60b2ede
hex718dc91bc

30481879484 has 48 divisors (see below), whose sum is σ = 63643926528. Its totient is φ = 12489869568.

The previous prime is 30481879481. The next prime is 30481879499. The reversal of 30481879484 is 48497818403.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30481879481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1546757 + ... + 1566339.

It is an arithmetic number, because the mean of its divisors is an integer number (1325915136).

Almost surely, 230481879484 is an apocalyptic number.

It is an amenable number.

30481879484 is an abundant number, since it is smaller than the sum of its proper divisors (33162047044).

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

30481879484 is a wasteful number, since it uses less digits than its factorization.

30481879484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22034 (or 22032 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 56.

The spelling of 30481879484 in words is "thirty billion, four hundred eighty-one million, eight hundred seventy-nine thousand, four hundred eighty-four".

Divisors: 1 2 4 7 14 23 28 46 92 161 322 644 2417 4834 9668 16919 19583 33838 39166 55591 67676 78332 111182 137081 222364 274162 389137 450409 548324 778274 900818 1556548 1801636 3152863 6305726 12611452 47332111 94664222 189328444 331324777 662649554 1088638553 1325299108 2177277106 4354554212 7620469871 15240939742 30481879484