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145857174430 = 251117311250799
BaseRepresentation
bin1000011111010111000…
…0111101101110011110
3111221111001000011120111
42013311300331232132
54342203414040210
6151001133240234
713352322345412
oct2076560755636
9457431004514
10145857174430
1156948632a70
122432733307a
13109a61a1596
1470b949cd42
153bda04588a
hex21f5c3db9e

145857174430 has 64 divisors (see below), whose sum is σ = 304234444800. Its totient is φ = 49758323200.

The previous prime is 145857174409. The next prime is 145857174461. The reversal of 145857174430 is 34471758541.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 456171 + ... + 706969.

It is an arithmetic number, because the mean of its divisors is an integer number (4753663200).

Almost surely, 2145857174430 is an apocalyptic number.

145857174430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145857174430 is an abundant number, since it is smaller than the sum of its proper divisors (158377270370).

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

145857174430 is a wasteful number, since it uses less digits than its factorization.

145857174430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251145.

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 145857174430 in words is "one hundred forty-five billion, eight hundred fifty-seven million, one hundred seventy-four thousand, four hundred thirty".

Divisors: 1 2 5 10 11 17 22 34 55 85 110 170 187 311 374 622 935 1555 1870 3110 3421 5287 6842 10574 17105 26435 34210 52870 58157 116314 250799 290785 501598 581570 1253995 2507990 2758789 4263583 5517578 8527166 13793945 21317915 27587890 42635830 46899413 77998489 93798826 155996978 234497065 389992445 468994130 779984890 857983379 1325974313 1715966758 2651948626 4289916895 6629871565 8579833790 13259743130 14585717443 29171434886 72928587215 145857174430