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3838894788 = 223319907899
BaseRepresentation
bin1110010011010000…
…1110001011000100
3100220112120001122110
43210310032023010
530330224113123
61432532501020
7164063032041
oct34464161304
910815501573
103838894788
11169aa57523
128b177a770
13492434ba1
14285bb81c8
15177050493
hexe4d0e2c4

3838894788 has 12 divisors (see below), whose sum is σ = 8957421200. Its totient is φ = 1279631592.

The previous prime is 3838894783. The next prime is 3838894817. The reversal of 3838894788 is 8874988383.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×38388947883 (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (3838894783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159953938 + ... + 159953961.

Almost surely, 23838894788 is an apocalyptic number.

It is an amenable number.

3838894788 is an abundant number, since it is smaller than the sum of its proper divisors (5118526412).

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

3838894788 is a wasteful number, since it uses less digits than its factorization.

3838894788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319907906 (or 319907904 counting only the distinct ones).

The product of its digits is 74317824, while the sum is 66.

The square root of 3838894788 is about 61958.8152565880. The cubic root of 3838894788 is about 1565.7968073750.

The spelling of 3838894788 in words is "three billion, eight hundred thirty-eight million, eight hundred ninety-four thousand, seven hundred eighty-eight".

Divisors: 1 2 3 4 6 12 319907899 639815798 959723697 1279631596 1919447394 3838894788