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30688414 = 215344207
BaseRepresentation
bin111010100010…
…0010010011110
32010202010120221
41311010102132
530324012124
63013431554
7521563411
oct165042236
963663527
1030688414
1116360729
12a33b5ba
136486433
14410bb78
152a62ce4
hex1d4449e

30688414 has 4 divisors (see below), whose sum is σ = 46032624. Its totient is φ = 15344206.

The previous prime is 30688403. The next prime is 30688423. The reversal of 30688414 is 41488603.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 30688414.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7672102 + ... + 7672105.

It is an arithmetic number, because the mean of its divisors is an integer number (11508156).

Almost surely, 230688414 is an apocalyptic number.

30688414 is a deficient number, since it is larger than the sum of its proper divisors (15344210).

30688414 is a wasteful number, since it uses less digits than its factorization.

30688414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15344209.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 30688414 is about 5539.7124474110. The cubic root of 30688414 is about 313.0820350662.

The spelling of 30688414 in words is "thirty million, six hundred eighty-eight thousand, four hundred fourteen".

Divisors: 1 2 15344207 30688414