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14157020 = 2253971783
BaseRepresentation
bin110110000000…
…010011011100
3222122020210002
4312000103130
512111011040
61223233432
7231222053
oct66002334
928566702
1014157020
117a9a419
1248a8878
132c18a47
141c4739a
151399a15
hexd804dc

14157020 has 24 divisors (see below), whose sum is σ = 29821344. Its totient is φ = 5645376.

The previous prime is 14157001. The next prime is 14157047. The reversal of 14157020 is 2075141.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 14156983 and 14157001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7049 + ... + 8831.

It is an arithmetic number, because the mean of its divisors is an integer number (1242556).

Almost surely, 214157020 is an apocalyptic number.

14157020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14157020 is an abundant number, since it is smaller than the sum of its proper divisors (15664324).

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

14157020 is a wasteful number, since it uses less digits than its factorization.

14157020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189 (or 2187 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 14157020 is about 3762.5815605778. The cubic root of 14157020 is about 241.9119275168.

The spelling of 14157020 in words is "fourteen million, one hundred fifty-seven thousand, twenty".

Divisors: 1 2 4 5 10 20 397 794 1588 1783 1985 3566 3970 7132 7940 8915 17830 35660 707851 1415702 2831404 3539255 7078510 14157020