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19860148 = 22711173793
BaseRepresentation
bin100101111000…
…0101010110100
31101101000000001
41023300222310
520041011043
61545401044
7330544210
oct113605264
941330001
1019860148
1110235250
126799184
134164889
1428cd940
151b2474d
hex12f0ab4

19860148 has 48 divisors (see below), whose sum is σ = 45892224. Its totient is φ = 7280640.

The previous prime is 19860143. The next prime is 19860173. The reversal of 19860148 is 84106891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19860143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3340 + ... + 7132.

It is an arithmetic number, because the mean of its divisors is an integer number (956088).

Almost surely, 219860148 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19860148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22946112).

19860148 is an abundant number, since it is smaller than the sum of its proper divisors (26032076).

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

19860148 is a wasteful number, since it uses less digits than its factorization.

19860148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832 (or 3830 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 19860148 is about 4456.4725961235. The cubic root of 19860148 is about 270.8075866228.

The spelling of 19860148 in words is "nineteen million, eight hundred sixty thousand, one hundred forty-eight".

Divisors: 1 2 4 7 11 14 17 22 28 34 44 68 77 119 154 187 238 308 374 476 748 1309 2618 3793 5236 7586 15172 26551 41723 53102 64481 83446 106204 128962 166892 257924 292061 451367 584122 709291 902734 1168244 1418582 1805468 2837164 4965037 9930074 19860148