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2990218560 = 263574110853
BaseRepresentation
bin1011001000111011…
…0001110101000000
321201101121211201120
42302032301311000
522110443443220
61212414432240
7134046303240
oct26216616500
97641554646
102990218560
1112a499a50a
126b5502680
1338866b2c4
142051bbb20
151277b0a40
hexb23b1d40

2990218560 has 224 divisors, whose sum is σ = 11115885312. Its totient is φ = 666746880.

The previous prime is 2990218531. The next prime is 2990218577. The reversal of 2990218560 is 658120992.

It is a tau number, because it is divible by the number of its divisors (224).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 270094 + ... + 280946.

It is an arithmetic number, because the mean of its divisors is an integer number (49624488).

Almost surely, 22990218560 is an apocalyptic number.

2990218560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2990218560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5557942656).

2990218560 is an abundant number, since it is smaller than the sum of its proper divisors (8125666752).

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

2990218560 is a wasteful number, since it uses less digits than its factorization.

2990218560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10921 (or 10911 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 2990218560 is about 54682.8909257731. The cubic root of 2990218560 is about 1440.6803883479.

The spelling of 2990218560 in words is "two billion, nine hundred ninety million, two hundred eighteen thousand, five hundred sixty".