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144970911 = 3331379457
BaseRepresentation
bin10001010010000…
…01010010011111
3101002210021201000
420221001102133
5244103032121
622215121343
73410142501
oct1051012237
9332707630
10144970911
1174917878
1240673253
132405ab07
1415379d71
15cad9526
hex8a4149f

144970911 has 32 divisors (see below), whose sum is σ = 222771200. Its totient is φ = 93078720.

The previous prime is 144970901. The next prime is 144970927. The reversal of 144970911 is 119079441.

It is not a de Polignac number, because 144970911 - 25 = 144970879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144970901) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316995 + ... + 317451.

It is an arithmetic number, because the mean of its divisors is an integer number (6961600).

Almost surely, 2144970911 is an apocalyptic number.

144970911 is a deficient number, since it is larger than the sum of its proper divisors (77800289).

144970911 is a wasteful number, since it uses less digits than its factorization.

144970911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876 (or 870 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 144970911 is about 12040.3866632264. The cubic root of 144970911 is about 525.3236534934.

The spelling of 144970911 in words is "one hundred forty-four million, nine hundred seventy thousand, nine hundred eleven".

Divisors: 1 3 9 27 31 93 279 379 457 837 1137 1371 3411 4113 10233 11749 12339 14167 35247 42501 105741 127503 173203 317223 382509 519609 1558827 4676481 5369293 16107879 48323637 144970911