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14971920 = 243562383
BaseRepresentation
bin111001000111…
…010000010000
31001011122121120
4321013100100
512313100140
61252522240
7241154625
oct71072020
931148546
1014971920
1184a6697
125020380
133142932
141dba34c
1514ab1d0
hexe47410

14971920 has 40 divisors (see below), whose sum is σ = 46413696. Its totient is φ = 3992448.

The previous prime is 14971907. The next prime is 14971933. The reversal of 14971920 is 2917941.

It is an interprime number because it is at equal distance from previous prime (14971907) and next prime (14971933).

It is a tau number, because it is divible by the number of its divisors (40).

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, 30952 + ... + 31431.

Almost surely, 214971920 is an apocalyptic number.

14971920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14971920 is an abundant number, since it is smaller than the sum of its proper divisors (31441776).

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

14971920 is a wasteful number, since it uses less digits than its factorization.

14971920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62399 (or 62393 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 14971920 is about 3869.3565356529. The cubic root of 14971920 is about 246.4672196712.

The spelling of 14971920 in words is "fourteen million, nine hundred seventy-one thousand, nine hundred twenty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 62383 124766 187149 249532 311915 374298 499064 623830 748596 935745 998128 1247660 1497192 1871490 2495320 2994384 3742980 4990640 7485960 14971920