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2878480800 = 253552131767
BaseRepresentation
bin1010101110010010…
…0010000110100000
321102121100222100000
42223210202012200
521343342341200
61153343500000
7131221453206
oct25344420640
97377328300
102878480800
111247911258
12683bb7600
1336b477ca0
141d4413076
1511ca8d300
hexab9221a0

2878480800 has 864 divisors, whose sum is σ = 12181845312. Its totient is φ = 656916480.

The previous prime is 2878480747. The next prime is 2878480873. The reversal of 2878480800 is 80848782.

2878480800 is a `hidden beast` number, since 28 + 78 + 480 + 80 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (864).

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 143 ways as a sum of consecutive naturals, for example, 42962367 + ... + 42962433.

It is an arithmetic number, because the mean of its divisors is an integer number (14099358).

Almost surely, 22878480800 is an apocalyptic number.

2878480800 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 2878480800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6090922656).

2878480800 is an abundant number, since it is smaller than the sum of its proper divisors (9303364512).

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

2878480800 is a wasteful number, since it uses less digits than its factorization.

2878480800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 107 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The square root of 2878480800 is about 53651.4752826052. The cubic root of 2878480800 is about 1422.5071096328.

The spelling of 2878480800 in words is "two billion, eight hundred seventy-eight million, four hundred eighty thousand, eight hundred".