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30689342 = 235174363
BaseRepresentation
bin111010100010…
…0100000111110
32010202011212022
41311010200332
530324024332
63013440142
7521566205
oct165044076
963664768
1030689342
11163613a2
12a340052
136486998
14410c23c
152a63212
hex1d4483e

30689342 has 8 divisors (see below), whose sum is σ = 46057656. Its totient is φ = 15336792.

The previous prime is 30689341. The next prime is 30689363. The reversal of 30689342 is 24398603.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30689341) 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, 4853 + ... + 9215.

It is an arithmetic number, because the mean of its divisors is an integer number (5757207).

Almost surely, 230689342 is an apocalyptic number.

30689342 is a deficient number, since it is larger than the sum of its proper divisors (15368314).

30689342 is a wasteful number, since it uses less digits than its factorization.

30689342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7882.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 30689342 is about 5539.7962056379. The cubic root of 30689342 is about 313.0851908413.

The spelling of 30689342 in words is "thirty million, six hundred eighty-nine thousand, three hundred forty-two".

Divisors: 1 2 3517 4363 7034 8726 15344671 30689342