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69301940 = 2255576221
BaseRepresentation
bin1000010000101…
…11011010110100
311211101220101112
410020113122310
5120220130230
610513214152
71501025321
oct410273264
9154356345
1069301940
1136134634
121b261358
1311485b86
1492bdb48
15613dd95
hex42176b4

69301940 has 24 divisors (see below), whose sum is σ = 145818792. Its totient is φ = 27666560.

The previous prime is 69301937. The next prime is 69301943. The reversal of 69301940 is 4910396.

It is an interprime number because it is at equal distance from previous prime (69301937) and next prime (69301943).

It can be written as a sum of positive squares in 4 ways, for example, as 3139984 + 66161956 = 1772^2 + 8134^2 .

It is a junction number, because it is equal to n+sod(n) for n = 69301897 and 69301906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69301943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8030 + ... + 14250.

It is an arithmetic number, because the mean of its divisors is an integer number (6075783).

Almost surely, 269301940 is an apocalyptic number.

It is an amenable number.

69301940 is an abundant number, since it is smaller than the sum of its proper divisors (76516852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69301940 is a wasteful number, since it uses less digits than its factorization.

69301940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6787 (or 6785 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 69301940 is about 8324.7786757367. The cubic root of 69301940 is about 410.7539962396.

The spelling of 69301940 in words is "sixty-nine million, three hundred one thousand, nine hundred forty".

Divisors: 1 2 4 5 10 20 557 1114 2228 2785 5570 6221 11140 12442 24884 31105 62210 124420 3465097 6930194 13860388 17325485 34650970 69301940