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152147931 = 3133901229
BaseRepresentation
bin10010001000110…
…01011111011011
3101121021220201120
421010121133123
5302422213211
623033020323
73525143655
oct1104313733
9347256646
10152147931
1178979aa1
1242b546a3
13256a1780
14162c76d5
15d555d06
hex91197db

152147931 has 8 divisors (see below), whose sum is σ = 218468880. Its totient is φ = 93629472.

The previous prime is 152147927. The next prime is 152147951. The reversal of 152147931 is 139741251.

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

It is not a de Polignac number, because 152147931 - 22 = 152147927 is a prime.

It is a super-2 number, since 2×1521479312 = 46297985815161522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 152147892 and 152147901.

It is not an unprimeable number, because it can be changed into a prime (152147911) 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, 1950576 + ... + 1950653.

It is an arithmetic number, because the mean of its divisors is an integer number (27308610).

Almost surely, 2152147931 is an apocalyptic number.

152147931 is a deficient number, since it is larger than the sum of its proper divisors (66320949).

152147931 is a wasteful number, since it uses less digits than its factorization.

152147931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901245.

The product of its digits is 7560, while the sum is 33.

The square root of 152147931 is about 12334.8259412121. The cubic root of 152147931 is about 533.8534048918.

The spelling of 152147931 in words is "one hundred fifty-two million, one hundred forty-seven thousand, nine hundred thirty-one".

Divisors: 1 3 13 39 3901229 11703687 50715977 152147931