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70191741 = 323397247
BaseRepresentation
bin1000010111100…
…00101001111101
311220002002222010
410023300221331
5120432113431
610544241433
71511422434
oct413605175
9156062863
1070191741
1136692104
121b610279
1311707b99
14947211b
156267846
hex42f0a7d

70191741 has 4 divisors (see below), whose sum is σ = 93588992. Its totient is φ = 46794492.

The previous prime is 70191739. The next prime is 70191761. The reversal of 70191741 is 14719107.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 70191741 - 21 = 70191739 is a prime.

It is a super-2 number, since 2×701917412 = 9853761009222162, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 70191699 and 70191708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70191731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11698621 + ... + 11698626.

It is an arithmetic number, because the mean of its divisors is an integer number (23397248).

Almost surely, 270191741 is an apocalyptic number.

It is an amenable number.

70191741 is a deficient number, since it is larger than the sum of its proper divisors (23397251).

70191741 is a wasteful number, since it uses less digits than its factorization.

70191741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23397250.

The product of its (nonzero) digits is 1764, while the sum is 30.

The square root of 70191741 is about 8378.0511457021. The cubic root of 70191741 is about 412.5044818613.

The spelling of 70191741 in words is "seventy million, one hundred ninety-one thousand, seven hundred forty-one".

Divisors: 1 3 23397247 70191741