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139868848 = 2471248829
BaseRepresentation
bin10000101011000…
…11101010110000
3100202012001222201
420111203222300
5241301300343
621513512544
73315602620
oct1025435260
9322161881
10139868848
1171a52599
123aa12754
1322c92742
141480c880
15c42c94d
hex8563ab0

139868848 has 20 divisors (see below), whose sum is σ = 309709840. Its totient is φ = 59943744.

The previous prime is 139868821. The next prime is 139868857. The reversal of 139868848 is 848868931.

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, 624303 + ... + 624526.

It is an arithmetic number, because the mean of its divisors is an integer number (15485492).

Almost surely, 2139868848 is an apocalyptic number.

It is an amenable number.

139868848 is an abundant number, since it is smaller than the sum of its proper divisors (169840992).

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

139868848 is a wasteful number, since it uses less digits than its factorization.

139868848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248844 (or 1248838 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 55.

The square root of 139868848 is about 11826.6160840707. The cubic root of 139868848 is about 519.0872152440.

The spelling of 139868848 in words is "one hundred thirty-nine million, eight hundred sixty-eight thousand, eight hundred forty-eight".

Divisors: 1 2 4 7 8 14 16 28 56 112 1248829 2497658 4995316 8741803 9990632 17483606 19981264 34967212 69934424 139868848