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70253816 = 238781727
BaseRepresentation
bin1000010111111…
…11110011111000
311220012021010012
410023333303320
5120441110231
610545441052
71512101423
oct413776370
9156167105
1070253816
1136724806
121b640188
131172a209
14948a9ba
15627ae2b
hex42ffcf8

70253816 has 8 divisors (see below), whose sum is σ = 131725920. Its totient is φ = 35126904.

The previous prime is 70253803. The next prime is 70253819. The reversal of 70253816 is 61835207.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70253819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4390856 + ... + 4390871.

It is an arithmetic number, because the mean of its divisors is an integer number (16465740).

Almost surely, 270253816 is an apocalyptic number.

It is an amenable number.

70253816 is a deficient number, since it is larger than the sum of its proper divisors (61472104).

70253816 is a wasteful number, since it uses less digits than its factorization.

70253816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8781733 (or 8781729 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 70253816 is about 8381.7549475035. The cubic root of 70253816 is about 412.6260473079.

The spelling of 70253816 in words is "seventy million, two hundred fifty-three thousand, eight hundred sixteen".

Divisors: 1 2 4 8 8781727 17563454 35126908 70253816