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70216419 = 37131913537
BaseRepresentation
bin1000010111101…
…10101011100011
311220010100211010
410023312223203
5120433411134
610544552003
71511554410
oct413665343
9156110733
1070216419
11366a96a9
121b622603
13117161a0
14947b107
15626ece9
hex42f6ae3

70216419 has 32 divisors (see below), whose sum is σ = 121300480. Its totient is φ = 35085312.

The previous prime is 70216403. The next prime is 70216459. The reversal of 70216419 is 91461207.

It is a happy number.

It is not a de Polignac number, because 70216419 - 24 = 70216403 is a prime.

It is a super-2 number, since 2×702164192 = 9860690994367122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70216459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1582 + ... + 11955.

It is an arithmetic number, because the mean of its divisors is an integer number (3790640).

Almost surely, 270216419 is an apocalyptic number.

70216419 is a deficient number, since it is larger than the sum of its proper divisors (51084061).

70216419 is a wasteful number, since it uses less digits than its factorization.

70216419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13579.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 70216419 is about 8379.5237931520. The cubic root of 70216419 is about 412.5528189481.

The spelling of 70216419 in words is "seventy million, two hundred sixteen thousand, four hundred nineteen".

Divisors: 1 3 7 13 19 21 39 57 91 133 247 273 399 741 1729 5187 13537 40611 94759 175981 257203 284277 527943 771609 1231867 1800421 3343639 3695601 5401263 10030917 23405473 70216419