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80387424 = 25331317421
BaseRepresentation
bin1001100101010…
…01110101100000
312121021002211000
410302221311200
5131034344144
611550552000
71664165445
oct462516540
9177232730
1080387424
1141416297
1222b08600
1313867830
14a9679cc
1570cd769
hex4ca9d60

80387424 has 192 divisors, whose sum is σ = 267986880. Its totient is φ = 23224320.

The previous prime is 80387401. The next prime is 80387431. The reversal of 80387424 is 42478308.

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 31 ways as a sum of consecutive naturals, for example, 190734 + ... + 191154.

It is an arithmetic number, because the mean of its divisors is an integer number (1395765).

Almost surely, 280387424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80387424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133993440).

80387424 is an abundant number, since it is smaller than the sum of its proper divisors (187599456).

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

80387424 is a wasteful number, since it uses less digits than its factorization.

80387424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 456 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 80387424 is about 8965.9034123729. The cubic root of 80387424 is about 431.5813846090.

The spelling of 80387424 in words is "eighty million, three hundred eighty-seven thousand, four hundred twenty-four".