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156228030 = 23257437379
BaseRepresentation
bin10010100111111…
…01100110111110
3101212222012120100
421103331212332
5304443244110
623300301530
73604626210
oct1123754676
9355865510
10156228030
1180206482
12443a18a6
132649c92a
1416a6a5b0
15daaebc0
hex94fd9be

156228030 has 192 divisors, whose sum is σ = 487618560. Its totient is φ = 33965568.

The previous prime is 156227993. The next prime is 156228043. The reversal of 156228030 is 30822651.

156228030 is a `hidden beast` number, since 1 + 5 + 622 + 8 + 0 + 30 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 156227985 and 156228003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1977531 + ... + 1977609.

It is an arithmetic number, because the mean of its divisors is an integer number (2539680).

Almost surely, 2156228030 is an apocalyptic number.

156228030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 156228030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243809280).

156228030 is an abundant number, since it is smaller than the sum of its proper divisors (331390530).

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

156228030 is a wasteful number, since it uses less digits than its factorization.

156228030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 156228030 is about 12499.1211691063. The cubic root of 156228030 is about 538.5834270953.

It can be divided in two parts, 1562 and 28030, that added together give a palindrome (29592).

The spelling of 156228030 in words is "one hundred fifty-six million, two hundred twenty-eight thousand, thirty".