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145006172 = 2236779859
BaseRepresentation
bin10001010010010…
…01111001011100
3101002212002001222
420221021321130
5244110144142
622215552512
73410350343
oct1051117134
9332762058
10145006172
1174941313
124068b738
1324070b8c
1415388b5a
15cae4bd2
hex8a49e5c

145006172 has 12 divisors (see below), whose sum is σ = 253855560. Its totient is φ = 72476016.

The previous prime is 145006153. The next prime is 145006201. The reversal of 145006172 is 271600541.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9779 + ... + 19637.

It is an arithmetic number, because the mean of its divisors is an integer number (21154630).

Almost surely, 2145006172 is an apocalyptic number.

It is an amenable number.

145006172 is a deficient number, since it is larger than the sum of its proper divisors (108849388).

145006172 is a wasteful number, since it uses less digits than its factorization.

145006172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13540 (or 13538 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 145006172 is about 12041.8508544160. The cubic root of 145006172 is about 525.3662411997.

The spelling of 145006172 in words is "one hundred forty-five million, six thousand, one hundred seventy-two".

Divisors: 1 2 4 3677 7354 9859 14708 19718 39436 36251543 72503086 145006172