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2878842240 = 273251134423
BaseRepresentation
bin1010101110010111…
…1010010110000000
321102122001100010200
42223211322112000
521343440422430
61153355325200
7131224520031
oct25345722600
97378040120
102878842240
11124803886a
12684150800
1336b573661
141d44a8a88
1511cb10460
hexab97a580

2878842240 has 192 divisors, whose sum is σ = 10031243040. Its totient is φ = 760725504.

The previous prime is 2878842229. The next prime is 2878842257. The reversal of 2878842240 is 422488782.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 648669 + ... + 653091.

Almost surely, 22878842240 is an apocalyptic number.

2878842240 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 2878842240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5015621520).

2878842240 is an abundant number, since it is smaller than the sum of its proper divisors (7152400800).

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

2878842240 is a wasteful number, since it uses less digits than its factorization.

2878842240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561 (or 4546 counting only the distinct ones).

The product of its (nonzero) digits is 458752, while the sum is 45.

The square root of 2878842240 is about 53654.8435837810. The cubic root of 2878842240 is about 1422.5666467622.

The spelling of 2878842240 in words is "two billion, eight hundred seventy-eight million, eight hundred forty-two thousand, two hundred forty".