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388367142 = 23174388547
BaseRepresentation
bin10111001001100…
…000001100100110
31000001210002120020
4113021200030212
51243410222032
6102312020010
712424031502
oct2711401446
91001702506
10388367142
1118a24aa89
12aa091606
13625ca757
1439817302
1524166b2c
hex17260326

388367142 has 32 divisors (see below), whose sum is σ = 841560192. Its totient is φ = 119005824.

The previous prime is 388367141. The next prime is 388367153. The reversal of 388367142 is 241763883.

It is a junction number, because it is equal to n+sod(n) for n = 388367094 and 388367103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388367141) 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, 39888 + ... + 48659.

It is an arithmetic number, because the mean of its divisors is an integer number (26298756).

Almost surely, 2388367142 is an apocalyptic number.

388367142 is an abundant number, since it is smaller than the sum of its proper divisors (453193050).

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

388367142 is a wasteful number, since it uses less digits than its factorization.

388367142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88612.

The product of its digits is 193536, while the sum is 42.

The square root of 388367142 is about 19707.0328055748. The cubic root of 388367142 is about 729.5932819155.

The spelling of 388367142 in words is "three hundred eighty-eight million, three hundred sixty-seven thousand, one hundred forty-two".

Divisors: 1 2 3 6 17 34 43 51 86 102 129 258 731 1462 2193 4386 88547 177094 265641 531282 1505299 3010598 3807521 4515897 7615042 9031794 11422563 22845126 64727857 129455714 194183571 388367142