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152230312 = 23131738461
BaseRepresentation
bin10010001001011…
…01100110101000
3101121110002201201
421010231212220
5302432332222
623034453544
73525636103
oct1104554650
9347402651
10152230312
1178a25983
1242b942b4
1325700110
141630973a
15d570427
hex912d9a8

152230312 has 32 divisors (see below), whose sum is σ = 309201480. Its totient is φ = 69845760.

The previous prime is 152230303. The next prime is 152230349. The reversal of 152230312 is 213032251.

It can be written as a sum of positive squares in 4 ways, for example, as 148206276 + 4024036 = 12174^2 + 2006^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 152230312.

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, 13762 + ... + 22222.

Almost surely, 2152230312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 152230312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (154600740).

152230312 is an abundant number, since it is smaller than the sum of its proper divisors (156971168).

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

152230312 is a wasteful number, since it uses less digits than its factorization.

152230312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8653 (or 8649 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 152230312 is about 12338.1648554394. The cubic root of 152230312 is about 533.9497397370.

Adding to 152230312 its reverse (213032251), we get a palindrome (365262563).

The spelling of 152230312 in words is "one hundred fifty-two million, two hundred thirty thousand, three hundred twelve".

Divisors: 1 2 4 8 13 26 52 104 173 346 692 1384 2249 4498 8461 8996 16922 17992 33844 67688 109993 219986 439972 879944 1463753 2927506 5855012 11710024 19028789 38057578 76115156 152230312