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74054881 = 211350971
BaseRepresentation
bin1000110100111…
…11110011100001
312011100101012101
410122133303201
5122424224011
611203130401
71556312305
oct432376341
9164311171
1074054881
113889058a
1220973a01
131245b374
149b99d05
15677c2c1
hex469fce1

74054881 has 4 divisors (see below), whose sum is σ = 74406064. Its totient is φ = 73703700.

The previous prime is 74054857. The next prime is 74054887. The reversal of 74054881 is 18845047.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18845047 = 131449619.

It is a cyclic number.

It is not a de Polignac number, because 74054881 - 29 = 74054369 is a prime.

It is a super-2 number, since 2×740548812 = 10968250799848322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74054881.

It is not an unprimeable number, because it can be changed into a prime (74054887) 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, 175275 + ... + 175696.

It is an arithmetic number, because the mean of its divisors is an integer number (18601516).

Almost surely, 274054881 is an apocalyptic number.

It is an amenable number.

74054881 is a deficient number, since it is larger than the sum of its proper divisors (351183).

74054881 is a wasteful number, since it uses less digits than its factorization.

74054881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351182.

The product of its (nonzero) digits is 35840, while the sum is 37.

The square root of 74054881 is about 8605.5145691585. The cubic root of 74054881 is about 419.9374075280.

The spelling of 74054881 in words is "seventy-four million, fifty-four thousand, eight hundred eighty-one".

Divisors: 1 211 350971 74054881