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71960472 = 2332999451
BaseRepresentation
bin1000100101000…
…00011110011000
312000101222012200
410102200132120
5121410213342
611050210200
71532440203
oct422403630
9160358180
1071960472
113768aa71
1220123960
1311ba6c7c
1497b293a
1564b694c
hex44a0798

71960472 has 24 divisors (see below), whose sum is σ = 194893140. Its totient is φ = 23986800.

The previous prime is 71960461. The next prime is 71960489. The reversal of 71960472 is 27406917.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 499654 + ... + 499797.

Almost surely, 271960472 is an apocalyptic number.

71960472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

71960472 is an abundant number, since it is smaller than the sum of its proper divisors (122932668).

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

71960472 is a wasteful number, since it uses less digits than its factorization.

71960472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 999463 (or 999456 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 71960472 is about 8482.9518447295. The cubic root of 71960472 is about 415.9406196062.

The spelling of 71960472 in words is "seventy-one million, nine hundred sixty thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 999451 1998902 2998353 3997804 5996706 7995608 8995059 11993412 17990118 23986824 35980236 71960472