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381935148 = 223723197689
BaseRepresentation
bin10110110000111…
…101111000101100
3222121200022112020
4112300331320230
51240233411043
6101522110140
712315252360
oct2660757054
9877608466
10381935148
11186657591
12a7aab350
1361187c3a
1438a212a0
15237e5e83
hex16c3de2c

381935148 has 48 divisors (see below), whose sum is σ = 1062781440. Its totient is φ = 104379264.

The previous prime is 381935137. The next prime is 381935149. The reversal of 381935148 is 841539183.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (381935149) 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, 96913 + ... + 100776.

It is an arithmetic number, because the mean of its divisors is an integer number (22141280).

Almost surely, 2381935148 is an apocalyptic number.

It is an amenable number.

381935148 is an abundant number, since it is smaller than the sum of its proper divisors (680846292).

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

381935148 is a wasteful number, since it uses less digits than its factorization.

381935148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197726 (or 197724 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 381935148 is about 19543.1611567832. The cubic root of 381935148 is about 725.5430876488.

The spelling of 381935148 in words is "three hundred eighty-one million, nine hundred thirty-five thousand, one hundred forty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 23 28 42 46 69 84 92 138 161 276 322 483 644 966 1932 197689 395378 593067 790756 1186134 1383823 2372268 2767646 4151469 4546847 5535292 8302938 9093694 13640541 16605876 18187388 27281082 31827929 54562164 63655858 95483787 127311716 190967574 381935148