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4990027680 = 2534511172971
BaseRepresentation
bin1001010010110110…
…11100011110100000
3110212202121200010000
410221123130132200
540204421341210
62143053340000
7234441351441
oct45133343640
913782550100
104990027680
112130816720
12b73197600
13616a79801
14354a272c8
151e3136ac0
hex1296dc7a0

4990027680 has 960 divisors, whose sum is σ = 21339521280. Its totient is φ = 1083801600.

The previous prime is 4990027673. The next prime is 4990027717. The reversal of 4990027680 is 867200994.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 70282045 + ... + 70282115.

It is an arithmetic number, because the mean of its divisors is an integer number (22228668).

Almost surely, 24990027680 is an apocalyptic number.

4990027680 is a gapful number since it is divisible by the number (40) 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 4990027680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10669760640).

4990027680 is an abundant number, since it is smaller than the sum of its proper divisors (16349493600).

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

4990027680 is a wasteful number, since it uses less digits than its factorization.

4990027680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 4990027680 is about 70640.1279727040. The cubic root of 4990027680 is about 1708.8383615615.

The spelling of 4990027680 in words is "four billion, nine hundred ninety million, twenty-seven thousand, six hundred eighty".