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380933020 = 225131465127
BaseRepresentation
bin10110101101001…
…001001110011100
3222112210101212101
4112231021032130
51240004324040
6101444414444
712303606616
oct2655111634
9875711771
10380933020
11186032686
12a76a7424
1360bc6a70
143883ddb6
152369909a
hex16b4939c

380933020 has 24 divisors (see below), whose sum is σ = 861495264. Its totient is φ = 140652096.

The previous prime is 380933017. The next prime is 380933039. The reversal of 380933020 is 20339083.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 380933020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 732304 + ... + 732823.

It is an arithmetic number, because the mean of its divisors is an integer number (35895636).

Almost surely, 2380933020 is an apocalyptic number.

It is an amenable number.

380933020 is an abundant number, since it is smaller than the sum of its proper divisors (480562244).

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

380933020 is a wasteful number, since it uses less digits than its factorization.

380933020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465149 (or 1465147 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 380933020 is about 19517.5054758542. The cubic root of 380933020 is about 724.9079677074.

The spelling of 380933020 in words is "three hundred eighty million, nine hundred thirty-three thousand, twenty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 1465127 2930254 5860508 7325635 14651270 19046651 29302540 38093302 76186604 95233255 190466510 380933020