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389370 = 23512979
BaseRepresentation
bin1011111000011111010
3201210010010
41133003322
544424440
612202350
73211122
oct1370372
9653103
10389370
112465a3
121693b6
131082c7
14a1c82
157a580
hex5f0fa

389370 has 16 divisors (see below), whose sum is σ = 934560. Its totient is φ = 103824.

The previous prime is 389369. The next prime is 389381. The reversal of 389370 is 73983.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 12979 = 389370 / (3 + 8 + 9 + 3 + 7 + 0).

It is a zygodrome in base 4.

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, 6460 + ... + 6519.

It is an arithmetic number, because the mean of its divisors is an integer number (58410).

2389370 is an apocalyptic number.

389370 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

389370 is an abundant number, since it is smaller than the sum of its proper divisors (545190).

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

389370 is a wasteful number, since it uses less digits than its factorization.

389370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12989.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 389370 is about 623.9951922892. The cubic root of 389370 is about 73.0220737650.

The spelling of 389370 in words is "three hundred eighty-nine thousand, three hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 12979 25958 38937 64895 77874 129790 194685 389370