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10388380 = 2252917911
BaseRepresentation
bin100111101000…
…001110011100
3201112210011211
4213220032130
510124412010
61010354204
7154204552
oct47501634
921483154
1010388380
115955a42
12358b964
1321c9592
141545bd2
15da308a
hex9e839c

10388380 has 24 divisors (see below), whose sum is σ = 22569120. Its totient is φ = 4011840.

The previous prime is 10388359. The next prime is 10388381. The reversal of 10388380 is 8388301.

10388380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10388381) 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, 8376 + ... + 9535.

It is an arithmetic number, because the mean of its divisors is an integer number (940380).

Almost surely, 210388380 is an apocalyptic number.

10388380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10388380 is an abundant number, since it is smaller than the sum of its proper divisors (12180740).

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

10388380 is a wasteful number, since it uses less digits than its factorization.

10388380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17949 (or 17947 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 10388380 is about 3223.1009912815. The cubic root of 10388380 is about 218.1972515387.

The spelling of 10388380 in words is "ten million, three hundred eighty-eight thousand, three hundred eighty".

Divisors: 1 2 4 5 10 20 29 58 116 145 290 580 17911 35822 71644 89555 179110 358220 519419 1038838 2077676 2597095 5194190 10388380