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30029913 = 339371187
BaseRepresentation
bin111001010001…
…1100001011001
32002111200022000
41302203201121
530141424123
62551351213
7513151524
oct162434131
962450260
1030029913
1115a50a11
12a082509
1362b57a4
143db9bbb
152982b43
hex1ca3859

30029913 has 16 divisors (see below), whose sum is σ = 44573760. Its totient is φ = 19981728.

The previous prime is 30029911. The next prime is 30029941. The reversal of 30029913 is 31992003.

It is not a de Polignac number, because 30029913 - 21 = 30029911 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (30029911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24706 + ... + 25892.

It is an arithmetic number, because the mean of its divisors is an integer number (2785860).

Almost surely, 230029913 is an apocalyptic number.

It is an amenable number.

30029913 is a deficient number, since it is larger than the sum of its proper divisors (14543847).

30029913 is a wasteful number, since it uses less digits than its factorization.

30029913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133 (or 2127 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 27.

The square root of 30029913 is about 5479.9555655133. The cubic root of 30029913 is about 310.8264903406.

The spelling of 30029913 in words is "thirty million, twenty-nine thousand, nine hundred thirteen".

Divisors: 1 3 9 27 937 1187 2811 3561 8433 10683 25299 32049 1112219 3336657 10009971 30029913