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8390149120 = 21051638701
BaseRepresentation
bin1111101000001011…
…11000010000000000
3210122201112201212201
413310011320100000
5114140334232440
63504314002544
7414626043103
oct76405702000
923581481781
108390149120
113616025241
121761a16454
13a393159a2
1459842673a
153418b519a
hex1f4178400

8390149120 has 44 divisors (see below), whose sum is σ = 20126537964. Its totient is φ = 3356057600.

The previous prime is 8390149109. The next prime is 8390149133. The reversal of 8390149120 is 219410938.

It can be written as a sum of positive squares in 2 ways, for example, as 6011831296 + 2378317824 = 77536^2 + 48768^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 8390149120.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 814231 + ... + 824470.

Almost surely, 28390149120 is an apocalyptic number.

8390149120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8390149120 is an abundant number, since it is smaller than the sum of its proper divisors (11736388844).

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

8390149120 is a wasteful number, since it uses less digits than its factorization.

8390149120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1638726 (or 1638708 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 8390149120 is about 91597.7571777825. The cubic root of 8390149120 is about 2031.9977679931.

The spelling of 8390149120 in words is "eight billion, three hundred ninety million, one hundred forty-nine thousand, one hundred twenty".

Divisors: 1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1024 1280 2560 5120 1638701 3277402 6554804 8193505 13109608 16387010 26219216 32774020 52438432 65548040 104876864 131096080 209753728 262192160 419507456 524384320 839014912 1048768640 1678029824 2097537280 4195074560 8390149120