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80744748 = 22372137321
BaseRepresentation
bin1001101000000…
…01000100101100
312121221020222020
410310001010230
5131132312443
612002350140
72000214300
oct464010454
9177836866
1080744748
114163a7a7
122305b350
1313961376
14aa1bd00
15714e583
hex4d0112c

80744748 has 36 divisors (see below), whose sum is σ = 219165912. Its totient is φ = 23069760.

The previous prime is 80744707. The next prime is 80744749. The reversal of 80744748 is 84744708.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (80744749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68073 + ... + 69248.

It is an arithmetic number, because the mean of its divisors is an integer number (6087942).

Almost surely, 280744748 is an apocalyptic number.

It is an amenable number.

80744748 is an abundant number, since it is smaller than the sum of its proper divisors (138421164).

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

80744748 is a wasteful number, since it uses less digits than its factorization.

80744748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137342 (or 137333 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 42.

The square root of 80744748 is about 8985.8081439568. The cubic root of 80744748 is about 432.2199026179.

The spelling of 80744748 in words is "eighty million, seven hundred forty-four thousand, seven hundred forty-eight".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 49 84 98 147 196 294 588 137321 274642 411963 549284 823926 961247 1647852 1922494 2883741 3844988 5767482 6728729 11534964 13457458 20186187 26914916 40372374 80744748