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70021068 = 22313448853
BaseRepresentation
bin1000010110001…
…10111111001100
311212202102211220
410023012333030
5120411133233
610540443340
71510112025
oct413067714
9155672756
1070021068
1136585957
121b549550
13116782b0
149429c4c
156231eb3
hex42c6fcc

70021068 has 24 divisors (see below), whose sum is σ = 175950768. Its totient is φ = 21544896.

The previous prime is 70021067. The next prime is 70021093. The reversal of 70021068 is 86012007.

It is not an unprimeable number, because it can be changed into a prime (70021067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224271 + ... + 224582.

It is an arithmetic number, because the mean of its divisors is an integer number (7331282).

Almost surely, 270021068 is an apocalyptic number.

70021068 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

70021068 is an abundant number, since it is smaller than the sum of its proper divisors (105929700).

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

70021068 is a wasteful number, since it uses less digits than its factorization.

70021068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448873 (or 448871 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 70021068 is about 8367.8592244373. The cubic root of 70021068 is about 412.1698721377.

The spelling of 70021068 in words is "seventy million, twenty-one thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 156 448853 897706 1346559 1795412 2693118 5386236 5835089 11670178 17505267 23340356 35010534 70021068