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144157660 = 2257207883
BaseRepresentation
bin10001001011110…
…10101111011100
3101001020222010121
420211322233130
5243401021120
622145444324
73400214503
oct1045725734
9331228117
10144157660
1174411869
12403406a4
1323b348ba
141520783a
15c9c85aa
hex897abdc

144157660 has 12 divisors (see below), whose sum is σ = 302731128. Its totient is φ = 57663056.

The previous prime is 144157639. The next prime is 144157679. The reversal of 144157660 is 66751441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3603922 + ... + 3603961.

It is an arithmetic number, because the mean of its divisors is an integer number (25227594).

Almost surely, 2144157660 is an apocalyptic number.

144157660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144157660 is an abundant number, since it is smaller than the sum of its proper divisors (158573468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144157660 is a wasteful number, since it uses less digits than its factorization.

144157660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7207892 (or 7207890 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 144157660 is about 12006.5673695690. The cubic root of 144157660 is about 524.3394989279.

The spelling of 144157660 in words is "one hundred forty-four million, one hundred fifty-seven thousand, six hundred sixty".

Divisors: 1 2 4 5 10 20 7207883 14415766 28831532 36039415 72078830 144157660