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30740423 = 719231131
BaseRepresentation
bin111010101000…
…0111111000111
32010211202221012
41311100333013
530332143143
63014512435
7522201140
oct165207707
963752835
1030740423
111639680a
12a36571b
1364a3ccc
144122ac7
152a73418
hex1d50fc7

30740423 has 8 divisors (see below), whose sum is σ = 36981120. Its totient is φ = 24962040.

The previous prime is 30740393. The next prime is 30740431. The reversal of 30740423 is 32404703.

It is a happy number.

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 30740423 - 212 = 30736327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30740473) 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, 115433 + ... + 115698.

It is an arithmetic number, because the mean of its divisors is an integer number (4622640).

Almost surely, 230740423 is an apocalyptic number.

30740423 is a deficient number, since it is larger than the sum of its proper divisors (6240697).

30740423 is a wasteful number, since it uses less digits than its factorization.

30740423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231157.

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 30740423 is about 5544.4046569492. The cubic root of 30740423 is about 313.2587998616.

The spelling of 30740423 in words is "thirty million, seven hundred forty thousand, four hundred twenty-three".

Divisors: 1 7 19 133 231131 1617917 4391489 30740423