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30064489 = 7213109433
BaseRepresentation
bin111001010101…
…1111101101001
32002120102201121
41302223331221
530144030424
62552215241
7513354400
oct162537551
962512647
1030064489
1115a74994
12a09a521
1362c8450
143dc8637
15298cee4
hex1cabf69

30064489 has 24 divisors (see below), whose sum is σ = 38096520. Its totient is φ = 23514624.

The previous prime is 30064487. The next prime is 30064499. The reversal of 30064489 is 98446003.

It can be written as a sum of positive squares in 4 ways, for example, as 176400 + 29888089 = 420^2 + 5467^2 .

It is not a de Polignac number, because 30064489 - 21 = 30064487 is a prime.

It is a super-2 number, since 2×300644892 = 1807746997662242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30064481) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69217 + ... + 69649.

It is an arithmetic number, because the mean of its divisors is an integer number (1587355).

Almost surely, 230064489 is an apocalyptic number.

It is an amenable number.

30064489 is a deficient number, since it is larger than the sum of its proper divisors (8032031).

30064489 is a wasteful number, since it uses less digits than its factorization.

30064489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 562 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 30064489 is about 5483.1094280527. The cubic root of 30064489 is about 310.9457382681.

Adding to 30064489 its product of nonzero digits (20736), we get a square (30085225 = 54852).

The spelling of 30064489 in words is "thirty million, sixty-four thousand, four hundred eighty-nine".

Divisors: 1 7 13 49 91 109 433 637 763 1417 3031 5341 5629 9919 21217 39403 47197 69433 275821 330379 613561 2312653 4294927 30064489