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30703933 = 1310972153
BaseRepresentation
bin111010100100…
…0000100111101
32010202220212201
41311020010331
530330011213
63014031501
7521656561
oct165100475
963686781
1030703933
1116371357
12a348591
136490510
1441136a1
152a676dd
hex1d4813d

30703933 has 8 divisors (see below), whose sum is σ = 33111288. Its totient is φ = 28303104.

The previous prime is 30703931. The next prime is 30703949. The reversal of 30703933 is 33930703.

It can be written as a sum of positive squares in 4 ways, for example, as 870489 + 29833444 = 933^2 + 5462^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 30703933 - 21 = 30703931 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30703931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13185 + ... + 15337.

It is an arithmetic number, because the mean of its divisors is an integer number (4138911).

Almost surely, 230703933 is an apocalyptic number.

It is an amenable number.

30703933 is a deficient number, since it is larger than the sum of its proper divisors (2407355).

30703933 is a wasteful number, since it uses less digits than its factorization.

30703933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263.

The product of its (nonzero) digits is 5103, while the sum is 28.

The square root of 30703933 is about 5541.1129748454. The cubic root of 30703933 is about 313.1348009224.

The spelling of 30703933 in words is "thirty million, seven hundred three thousand, nine hundred thirty-three".

Divisors: 1 13 1097 2153 14261 27989 2361841 30703933