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145430637 = 31115792791
BaseRepresentation
bin10001010101100…
…01100001101101
3101010122122022220
420222301201231
5244212240022
622233025553
73414066012
oct1052614155
9333578286
10145430637
1175101210
12408552b9
132418c141
1415459709
15cb7a85c
hex8ab186d

145430637 has 16 divisors (see below), whose sum is σ = 211745280. Its totient is φ = 88052400.

The previous prime is 145430629. The next prime is 145430639. The reversal of 145430637 is 736034541.

It is not a de Polignac number, because 145430637 - 23 = 145430629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 145430598 and 145430607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145430639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50712 + ... + 53502.

It is an arithmetic number, because the mean of its divisors is an integer number (13234080).

Almost surely, 2145430637 is an apocalyptic number.

It is an amenable number.

145430637 is a deficient number, since it is larger than the sum of its proper divisors (66314643).

145430637 is a wasteful number, since it uses less digits than its factorization.

145430637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4384.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 145430637 is about 12059.4625502134. The cubic root of 145430637 is about 525.8783627231.

The spelling of 145430637 in words is "one hundred forty-five million, four hundred thirty thousand, six hundred thirty-seven".

Divisors: 1 3 11 33 1579 2791 4737 8373 17369 30701 52107 92103 4406989 13220967 48476879 145430637