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2130917880 = 2335721361457
BaseRepresentation
bin111111100000011…
…0011100111111000
312111111200211210110
41333000303213320
513331003333010
6551240544320
7103543334400
oct17700634770
95444624713
102130917880
119a3936163
124b57820a0
1327c624870
14163017800
15c7123120
hex7f0339f8

2130917880 has 384 divisors, whose sum is σ = 8157602880. Its totient is φ = 441262080.

The previous prime is 2130917879. The next prime is 2130917911. The reversal of 2130917880 is 887190312.

It is a super-2 number, since 2×21309178802 = 9081622022607388800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4662612 + ... + 4663068.

Almost surely, 22130917880 is an apocalyptic number.

2130917880 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 2130917880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4078801440).

2130917880 is an abundant number, since it is smaller than the sum of its proper divisors (6026685000).

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

2130917880 is a wasteful number, since it uses less digits than its factorization.

2130917880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 2130917880 is about 46161.8660801316. The cubic root of 2130917880 is about 1286.8331429590.

The spelling of 2130917880 in words is "two billion, one hundred thirty million, nine hundred seventeen thousand, eight hundred eighty".