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2990113280 = 29572112197
BaseRepresentation
bin1011001000111001…
…1000001000000000
321201101102111022022
42302032120020000
522110432111110
61212412301012
7134045354300
oct26216301000
97641374268
102990113280
1112a4928400
126b5471768
133886323cb
14205191600
1512778e755
hexb2398200

2990113280 has 360 divisors, whose sum is σ = 9213371244. Its totient is φ = 927252480.

The previous prime is 2990113253. The next prime is 2990113307. The reversal of 2990113280 is 823110992.

It is an interprime number because it is at equal distance from previous prime (2990113253) and next prime (2990113307).

It can be written as a sum of positive squares in 2 ways, for example, as 2806456576 + 183656704 = 52976^2 + 13552^2 .

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 2990113280.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15178142 + ... + 15178338.

Almost surely, 22990113280 is an apocalyptic number.

2990113280 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 2990113280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4606685622).

2990113280 is an abundant number, since it is smaller than the sum of its proper divisors (6223257964).

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

2990113280 is a wasteful number, since it uses less digits than its factorization.

2990113280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 2990113280 is about 54681.9282761682. The cubic root of 2990113280 is about 1440.6634802626.

The spelling of 2990113280 in words is "two billion, nine hundred ninety million, one hundred thirteen thousand, two hundred eighty".