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380778694 = 21571212671
BaseRepresentation
bin10110101100100…
…011100011000110
3222112111120011121
4112230203203012
51234434404234
6101441224154
712302364652
oct2654434306
9875446147
10380778694
11185a3773a
12a763205a
1360b7174a
14387dda62
15236684b4
hex16b238c6

380778694 has 8 divisors (see below), whose sum is σ = 574806528. Its totient is φ = 189176520.

The previous prime is 380778691. The next prime is 380778701. The reversal of 380778694 is 496877083.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380778691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606022 + ... + 606649.

It is an arithmetic number, because the mean of its divisors is an integer number (71850816).

Almost surely, 2380778694 is an apocalyptic number.

380778694 is a deficient number, since it is larger than the sum of its proper divisors (194027834).

380778694 is a wasteful number, since it uses less digits than its factorization.

380778694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212830.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The square root of 380778694 is about 19513.5515475784. The cubic root of 380778694 is about 724.8100613809.

The spelling of 380778694 in words is "three hundred eighty million, seven hundred seventy-eight thousand, six hundred ninety-four".

Divisors: 1 2 157 314 1212671 2425342 190389347 380778694