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30349425 = 3521313089
BaseRepresentation
bin111001111000…
…1100001110001
32010002220120210
41303301201301
530232140200
63002254333
7515652201
oct163614161
963086523
1030349425
1116149a77
12a1b73a9
136398052
144060401
1529e7650
hex1cf1871

30349425 has 24 divisors (see below), whose sum is σ = 50577120. Its totient is φ = 16057600.

The previous prime is 30349409. The next prime is 30349433. The reversal of 30349425 is 52494303.

It is not a de Polignac number, because 30349425 - 24 = 30349409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30349392 and 30349401.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 8281 + ... + 11369.

It is an arithmetic number, because the mean of its divisors is an integer number (2107380).

It is the magic constant of a 393 × 393 magic square.

Almost surely, 230349425 is an apocalyptic number.

It is an amenable number.

30349425 is a deficient number, since it is larger than the sum of its proper divisors (20227695).

30349425 is a wasteful number, since it uses less digits than its factorization.

30349425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3233 (or 3228 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 30349425 is about 5509.0312215488. The cubic root of 30349425 is about 311.9249799084.

The spelling of 30349425 in words is "thirty million, three hundred forty-nine thousand, four hundred twenty-five".