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70899248 = 24717231619
BaseRepresentation
bin1000011100111…
…01011000110000
311221102001111002
410032131120300
5121122233443
611011341132
71520430230
oct416353060
9157361432
1070899248
1137025722
121b8b17a8
13118c4c24
1495b7cc0
1563572b8
hex439d630

70899248 has 80 divisors (see below), whose sum is σ = 173560320. Its totient is φ = 27337728.

The previous prime is 70899247. The next prime is 70899253. The reversal of 70899248 is 84299807.

It is not an unprimeable number, because it can be changed into a prime (70899247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42983 + ... + 44601.

It is an arithmetic number, because the mean of its divisors is an integer number (2169504).

Almost surely, 270899248 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 70899248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86780160).

70899248 is an abundant number, since it is smaller than the sum of its proper divisors (102661072).

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

70899248 is a wasteful number, since it uses less digits than its factorization.

70899248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1674 (or 1668 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 47.

The square root of 70899248 is about 8420.1691194417. The cubic root of 70899248 is about 413.8858157099.

The spelling of 70899248 in words is "seventy million, eight hundred ninety-nine thousand, two hundred forty-eight".

Divisors: 1 2 4 7 8 14 16 17 23 28 34 46 56 68 92 112 119 136 161 184 238 272 322 368 391 476 644 782 952 1288 1564 1619 1904 2576 2737 3128 3238 5474 6256 6476 10948 11333 12952 21896 22666 25904 27523 37237 43792 45332 55046 74474 90664 110092 148948 181328 192661 220184 260659 297896 385322 440368 521318 595792 633029 770644 1042636 1266058 1541288 2085272 2532116 3082576 4170544 4431203 5064232 8862406 10128464 17724812 35449624 70899248