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381198039 = 3661192233
BaseRepresentation
bin10110101110001…
…001111011010111
3222120021212101220
4112232021323113
51240041314124
6101454221423
712306062355
oct2656117327
9876255356
10381198039
111861a3802
12a77b4873
1360c8a591
14388ac7d5
15236ec879
hex16b89ed7

381198039 has 8 divisors (see below), whose sum is σ = 509035632. Its totient is φ = 253746240.

The previous prime is 381197983. The next prime is 381198071. The reversal of 381198039 is 930891183.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 381198039 - 29 = 381197527 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381193039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94134 + ... + 98099.

It is an arithmetic number, because the mean of its divisors is an integer number (63629454).

Almost surely, 2381198039 is an apocalyptic number.

381198039 is a deficient number, since it is larger than the sum of its proper divisors (127837593).

381198039 is a wasteful number, since it uses less digits than its factorization.

381198039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192897.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 381198039 is about 19524.2935595632. The cubic root of 381198039 is about 725.0760373678.

The spelling of 381198039 in words is "three hundred eighty-one million, one hundred ninety-eight thousand, thirty-nine".

Divisors: 1 3 661 1983 192233 576699 127066013 381198039