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70245953 = 619371229
BaseRepresentation
bin1000010111111…
…01111001000001
311220011212022222
410023331321001
5120440332303
610545340425
71512036461
oct413757101
9156155288
1070245953
1136719908
121b637715
131172676b
149487ba1
156278938
hex42fde41

70245953 has 8 divisors (see below), whose sum is σ = 71531880. Its totient is φ = 68964480.

The previous prime is 70245947. The next prime is 70246003. The reversal of 70245953 is 35954207.

It can be written as a sum of positive squares in 4 ways, for example, as 1555009 + 68690944 = 1247^2 + 8288^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70245953 - 24 = 70245937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70241953) 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, 56543 + ... + 57771.

It is an arithmetic number, because the mean of its divisors is an integer number (8941485).

Almost surely, 270245953 is an apocalyptic number.

It is an amenable number.

70245953 is a deficient number, since it is larger than the sum of its proper divisors (1285927).

70245953 is a wasteful number, since it uses less digits than its factorization.

70245953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 70245953 is about 8381.2858798635. The cubic root of 70245953 is about 412.6106526534.

The spelling of 70245953 in words is "seventy million, two hundred forty-five thousand, nine hundred fifty-three".

Divisors: 1 61 937 1229 57157 74969 1151573 70245953