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30923668 = 227730917
BaseRepresentation
bin111010111110…
…1101110010100
32011012002022001
41311331232110
530404024133
63022445044
7523563316
oct165755624
964162261
1030923668
1116501456
12a433784
136539539
14416d7b6
152aac87d
hex1d7db94

30923668 has 6 divisors (see below), whose sum is σ = 54116426. Its totient is φ = 15461832.

The previous prime is 30923653. The next prime is 30923687. The reversal of 30923668 is 86632903.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21511044 + 9412624 = 4638^2 + 3068^2 .

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, 3865455 + ... + 3865462.

Almost surely, 230923668 is an apocalyptic number.

It is an amenable number.

30923668 is a deficient number, since it is larger than the sum of its proper divisors (23192758).

30923668 is a wasteful number, since it uses less digits than its factorization.

30923668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7730921 (or 7730919 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 30923668 is about 5560.9053219777. The cubic root of 30923668 is about 313.8800169065.

The spelling of 30923668 in words is "thirty million, nine hundred twenty-three thousand, six hundred sixty-eight".

Divisors: 1 2 4 7730917 15461834 30923668