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145270144 = 271134923
BaseRepresentation
bin10001010100010…
…10010110000000
3101010100111011201
420222022112000
5244142121034
622225350544
73412530055
oct1052122600
9333314151
10145270144
1175001678
1240798454
1324134086
141541702c
15cb48014
hex8a8a580

145270144 has 16 divisors (see below), whose sum is σ = 289405620. Its totient is φ = 72635008.

The previous prime is 145270133. The next prime is 145270159. The reversal of 145270144 is 441072541.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×1452701442 = 42206829475561472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 567334 + ... + 567589.

Almost surely, 2145270144 is an apocalyptic number.

It is an amenable number.

145270144 is a deficient number, since it is larger than the sum of its proper divisors (144135476).

145270144 is an equidigital number, since it uses as much as digits as its factorization.

145270144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1134937 (or 1134925 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 145270144 is about 12052.8064781610. The cubic root of 145270144 is about 525.6848435217.

The spelling of 145270144 in words is "one hundred forty-five million, two hundred seventy thousand, one hundred forty-four".

Divisors: 1 2 4 8 16 32 64 128 1134923 2269846 4539692 9079384 18158768 36317536 72635072 145270144