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148387389 = 3281176023
BaseRepresentation
bin10001101100000…
…11011000111101
3101100012212020020
420312003120331
5300441344024
622420242353
73451162203
oct1066033075
9340185206
10148387389
1176840707
12418403b9
1324985bb7
14159c9073
15d061979
hex8d8363d

148387389 has 8 divisors (see below), whose sum is σ = 198555072. Its totient is φ = 98572320.

The previous prime is 148387387. The next prime is 148387391. The reversal of 148387389 is 983783841.

148387389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (148387387) and next prime (148387391).

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

It is not a de Polignac number, because 148387389 - 21 = 148387387 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148387381) 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, 87169 + ... + 88854.

It is an arithmetic number, because the mean of its divisors is an integer number (24819384).

Almost surely, 2148387389 is an apocalyptic number.

It is an amenable number.

148387389 is a deficient number, since it is larger than the sum of its proper divisors (50167683).

148387389 is a wasteful number, since it uses less digits than its factorization.

148387389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176307.

The product of its digits is 1161216, while the sum is 51.

The square root of 148387389 is about 12181.4362453694. The cubic root of 148387389 is about 529.4183591909.

The spelling of 148387389 in words is "one hundred forty-eight million, three hundred eighty-seven thousand, three hundred eighty-nine".

Divisors: 1 3 281 843 176023 528069 49462463 148387389