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80948880 = 24325112429
BaseRepresentation
bin1001101001100…
…10111010010000
312122022121222200
410310302322100
5131210331010
612011003200
72002024365
oct464627220
9178277880
1080948880
114176a101
1223139500
1313a0325c
14aa7246c
15718ecc0
hex4d32e90

80948880 has 60 divisors (see below), whose sum is σ = 271855740. Its totient is φ = 21586176.

The previous prime is 80948837. The next prime is 80948893. The reversal of 80948880 is 8884908.

It can be written as a sum of positive squares in 2 ways, for example, as 44515584 + 36433296 = 6672^2 + 6036^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55495 + ... + 56934.

It is an arithmetic number, because the mean of its divisors is an integer number (4530929).

Almost surely, 280948880 is an apocalyptic number.

80948880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

80948880 is an abundant number, since it is smaller than the sum of its proper divisors (190906860).

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

80948880 is a wasteful number, since it uses less digits than its factorization.

80948880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112448 (or 112439 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 80948880 is about 8997.1595517697. The cubic root of 80948880 is about 432.5838299643.

The spelling of 80948880 in words is "eighty million, nine hundred forty-eight thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 36 40 45 48 60 72 80 90 120 144 180 240 360 720 112429 224858 337287 449716 562145 674574 899432 1011861 1124290 1349148 1686435 1798864 2023722 2248580 2698296 3372870 4047444 4497160 5059305 5396592 6745740 8094888 8994320 10118610 13491480 16189776 20237220 26982960 40474440 80948880