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152788889 = 1149128289
BaseRepresentation
bin10010001101101…
…01111110011001
3101122111110221202
421012311332121
5303103221024
623054443545
73533453441
oct1106657631
9348443852
10152788889
1179277610
12432035b5
1325867436
1416413121
15d630bae
hex91b5f99

152788889 has 8 divisors (see below), whose sum is σ = 167024160. Its totient is φ = 138611200.

The previous prime is 152788879. The next prime is 152788891. The reversal of 152788889 is 988887251.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-152788889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (152788829) 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, 8744 + ... + 19545.

It is an arithmetic number, because the mean of its divisors is an integer number (20878020).

Almost surely, 2152788889 is an apocalyptic number.

It is an amenable number.

152788889 is a deficient number, since it is larger than the sum of its proper divisors (14235271).

152788889 is a wasteful number, since it uses less digits than its factorization.

152788889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28791.

The product of its digits is 2580480, while the sum is 56.

The square root of 152788889 is about 12360.7802747238. The cubic root of 152788889 is about 534.6020145494.

The spelling of 152788889 in words is "one hundred fifty-two million, seven hundred eighty-eight thousand, eight hundred eighty-nine".

Divisors: 1 11 491 5401 28289 311179 13889899 152788889