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230420154 = 2348778857
BaseRepresentation
bin11011011101111…
…10111010111010
3121001120120000210
431232332322322
5432441421104
634510411550
75465352606
oct1556767272
9531516023
10230420154
11109080088
1265200bb6
13389785b3
1422860506
1515367989
hexdbbeeba

230420154 has 16 divisors (see below), whose sum is σ = 461792448. Its totient is φ = 76648032.

The previous prime is 230420149. The next prime is 230420171. The reversal of 230420154 is 451024032.

It is a self number, because there is not a number n which added to its sum of digits gives 230420154.

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, 36507 + ... + 42350.

It is an arithmetic number, because the mean of its divisors is an integer number (28862028).

Almost surely, 2230420154 is an apocalyptic number.

230420154 is an abundant number, since it is smaller than the sum of its proper divisors (231372294).

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

230420154 is a wasteful number, since it uses less digits than its factorization.

230420154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79349.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 230420154 is about 15179.5966349571. The cubic root of 230420154 is about 613.0654206255.

Adding to 230420154 its reverse (451024032), we get a palindrome (681444186).

The spelling of 230420154 in words is "two hundred thirty million, four hundred twenty thousand, one hundred fifty-four".

Divisors: 1 2 3 6 487 974 1461 2922 78857 157714 236571 473142 38403359 76806718 115210077 230420154