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70193019 = 3136726863
BaseRepresentation
bin1000010111100…
…00111101111011
311220002011201110
410023300331323
5120432134034
610544251403
71511426241
oct413607573
9156064643
1070193019
1136693066
121b610b63
1311708640
149472791
156267de9
hex42f0f7b

70193019 has 16 divisors (see below), whose sum is σ = 102298112. Its totient is φ = 42549408.

The previous prime is 70193003. The next prime is 70193047. The reversal of 70193019 is 91039107.

It is not a de Polignac number, because 70193019 - 24 = 70193003 is a prime.

It is a super-2 number, since 2×701930192 = 9854119832668722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70193059) 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, 10819 + ... + 16044.

It is an arithmetic number, because the mean of its divisors is an integer number (6393632).

Almost surely, 270193019 is an apocalyptic number.

70193019 is a deficient number, since it is larger than the sum of its proper divisors (32105093).

70193019 is a wasteful number, since it uses less digits than its factorization.

70193019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26946.

The product of its (nonzero) digits is 1701, while the sum is 30.

The square root of 70193019 is about 8378.1274160757. The cubic root of 70193019 is about 412.5069853730.

The spelling of 70193019 in words is "seventy million, one hundred ninety-three thousand, nineteen".

Divisors: 1 3 13 39 67 201 871 2613 26863 80589 349219 1047657 1799821 5399463 23397673 70193019