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30427490 = 253042749
BaseRepresentation
bin111010000010…
…0100101100010
32010020212200002
41310010211202
530242134430
63004100002
7516425612
oct164044542
963225602
1030427490
11161a2695
12a234602
1363c4742
144080a42
152a10845
hex1d04962

30427490 has 8 divisors (see below), whose sum is σ = 54769500. Its totient is φ = 12170992.

The previous prime is 30427487. The next prime is 30427519. The reversal of 30427490 is 9472403.

It can be written as a sum of positive squares in 2 ways, for example, as 28912129 + 1515361 = 5377^2 + 1231^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1521365 + ... + 1521384.

Almost surely, 230427490 is an apocalyptic number.

30427490 is a deficient number, since it is larger than the sum of its proper divisors (24342010).

30427490 is a wasteful number, since it uses less digits than its factorization.

30427490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042756.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 30427490 is about 5516.1118552836. Note that the first 3 decimals coincide. The cubic root of 30427490 is about 312.1921961212.

Adding to 30427490 its reverse (9472403), we get a palindrome (39899893).

The spelling of 30427490 in words is "thirty million, four hundred twenty-seven thousand, four hundred ninety".

Divisors: 1 2 5 10 3042749 6085498 15213745 30427490