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153430428 = 22312785869
BaseRepresentation
bin10010010010100…
…10100110011100
3101200201001222110
421021102212130
5303234233203
623120314020
73542065014
oct1111224634
9350631873
10153430428
1179675608
1243472910
1325a30448
141653cc44
15d70ad03
hex925299c

153430428 has 12 divisors (see below), whose sum is σ = 358004360. Its totient is φ = 51143472.

The previous prime is 153430399. The next prime is 153430463. The reversal of 153430428 is 824034351.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 153430395 and 153430404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6392923 + ... + 6392946.

Almost surely, 2153430428 is an apocalyptic number.

It is an amenable number.

153430428 is an abundant number, since it is smaller than the sum of its proper divisors (204573932).

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

153430428 is a wasteful number, since it uses less digits than its factorization.

153430428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12785876 (or 12785874 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 153430428 is about 12386.7036777344. The cubic root of 153430428 is about 535.3492092262.

Adding to 153430428 its reverse (824034351), we get a palindrome (977464779).

The spelling of 153430428 in words is "one hundred fifty-three million, four hundred thirty thousand, four hundred twenty-eight".

Divisors: 1 2 3 4 6 12 12785869 25571738 38357607 51143476 76715214 153430428