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30740351 = 2310712491
BaseRepresentation
bin111010101000…
…0111101111111
32010211202211112
41311100331333
530332142401
63014512235
7522201005
oct165207577
963752745
1030740351
1116396754
12a36567b
1364a3c75
144122a75
152a733bb
hex1d50f7f

30740351 has 8 divisors (see below), whose sum is σ = 32379264. Its totient is φ = 29126680.

The previous prime is 30740321. The next prime is 30740393. The reversal of 30740351 is 15304703.

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 a de Polignac number, because none of the positive numbers 2k-30740351 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30740321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3785 + ... + 8706.

It is an arithmetic number, because the mean of its divisors is an integer number (4047408).

Almost surely, 230740351 is an apocalyptic number.

30740351 is a deficient number, since it is larger than the sum of its proper divisors (1638913).

30740351 is a wasteful number, since it uses less digits than its factorization.

30740351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12621.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 30740351 is about 5544.3981639128. The cubic root of 30740351 is about 313.2585552905.

The spelling of 30740351 in words is "thirty million, seven hundred forty thousand, three hundred fifty-one".

Divisors: 1 23 107 2461 12491 287293 1336537 30740351