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80297400 = 23352373617
BaseRepresentation
bin1001100100100…
…11110110111000
312121002112022210
410302103312320
5131024004100
611545015120
71663342131
oct462236670
9177075283
1080297400
1141364697
1222a844a0
1313835871
14a942c88
1570b1c50
hex4c93db8

80297400 has 96 divisors (see below), whose sum is σ = 255720240. Its totient is φ = 20828160.

The previous prime is 80297387. The next prime is 80297419. The reversal of 80297400 is 479208.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20392 + ... + 24008.

Almost surely, 280297400 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 80297400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127860120).

80297400 is an abundant number, since it is smaller than the sum of its proper divisors (175422840).

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

80297400 is a wasteful number, since it uses less digits than its factorization.

80297400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673 (or 3664 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 80297400 is about 8960.8816530518. The cubic root of 80297400 is about 431.4202184586.

The spelling of 80297400 in words is "eighty million, two hundred ninety-seven thousand, four hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 25 30 37 40 50 60 74 75 100 111 120 148 150 185 200 222 296 300 370 444 555 600 740 888 925 1110 1480 1850 2220 2775 3617 3700 4440 5550 7234 7400 10851 11100 14468 18085 21702 22200 28936 36170 43404 54255 72340 86808 90425 108510 133829 144680 180850 217020 267658 271275 361700 401487 434040 535316 542550 669145 723400 802974 1070632 1085100 1338290 1605948 2007435 2170200 2676580 3211896 3345725 4014870 5353160 6691450 8029740 10037175 13382900 16059480 20074350 26765800 40148700 80297400