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145034879 = 1113184989
BaseRepresentation
bin10001010010100…
…00111001111111
3101002220112110012
420221100321333
5244112104004
622220333435
73410530133
oct1051207177
9332815405
10145034879
1174960940
12406a427b
1324080c72
14153953c3
15caed46e
hex8a50e7f

145034879 has 4 divisors (see below), whose sum is σ = 158219880. Its totient is φ = 131849880.

The previous prime is 145034863. The next prime is 145034893. The reversal of 145034879 is 978430541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 978430541 = 1188948231.

It is a cyclic number.

It is not a de Polignac number, because 145034879 - 24 = 145034863 is a prime.

It is a super-2 number, since 2×1450348792 = 42070232253089282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145034839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6592484 + ... + 6592505.

It is an arithmetic number, because the mean of its divisors is an integer number (39554970).

Almost surely, 2145034879 is an apocalyptic number.

145034879 is a deficient number, since it is larger than the sum of its proper divisors (13185001).

145034879 is a wasteful number, since it uses less digits than its factorization.

145034879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13185000.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 145034879 is about 12043.0427633551. The cubic root of 145034879 is about 525.4009079851.

The spelling of 145034879 in words is "one hundred forty-five million, thirty-four thousand, eight hundred seventy-nine".

Divisors: 1 11 13184989 145034879