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70401181 = 837691103
BaseRepresentation
bin1000011001000…
…11110010011101
311220110202021011
410030203302131
5121010314211
610552535221
71513254154
oct414436235
9156422234
1070401181
11368154a4
121b6b1511
131177c306
1494c859b
1562a9921
hex4323c9d

70401181 has 8 divisors (see below), whose sum is σ = 71406720. Its totient is φ = 69399552.

The previous prime is 70401179. The next prime is 70401197. The reversal of 70401181 is 18110407.

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 70401181 - 21 = 70401179 is a prime.

It is a super-2 number, since 2×704011812 = 9912652572389522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70401481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63276 + ... + 64378.

It is an arithmetic number, because the mean of its divisors is an integer number (8925840).

Almost surely, 270401181 is an apocalyptic number.

It is an amenable number.

70401181 is a deficient number, since it is larger than the sum of its proper divisors (1005539).

70401181 is a wasteful number, since it uses less digits than its factorization.

70401181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1955.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 70401181 is about 8390.5411625234. The cubic root of 70401181 is about 412.9143551144.

Adding to 70401181 its reverse (18110407), we get a palindrome (88511588).

The spelling of 70401181 in words is "seventy million, four hundred one thousand, one hundred eighty-one".

Divisors: 1 83 769 1103 63827 91549 848207 70401181