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345648890 = 2534564889
BaseRepresentation
bin10100100110100…
…010111011111010
3220002101210010202
4110212202323322
51201441231030
654144242202
711364652466
oct2446427372
9802353122
10345648890
11168123144
1297910362
13567c1892
1433c974a6
1520529745
hex149a2efa

345648890 has 8 divisors (see below), whose sum is σ = 622168020. Its totient is φ = 138259552.

The previous prime is 345648889. The next prime is 345648907. The reversal of 345648890 is 98846543.

It can be written as a sum of positive squares in 2 ways, for example, as 345550921 + 97969 = 18589^2 + 313^2 .

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, 17282435 + ... + 17282454.

Almost surely, 2345648890 is an apocalyptic number.

345648890 is a deficient number, since it is larger than the sum of its proper divisors (276519130).

345648890 is a wasteful number, since it uses less digits than its factorization.

345648890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34564896.

The product of its (nonzero) digits is 829440, while the sum is 47.

The square root of 345648890 is about 18591.6349469325. The cubic root of 345648890 is about 701.7973470986.

The spelling of 345648890 in words is "three hundred forty-five million, six hundred forty-eight thousand, eight hundred ninety".

Divisors: 1 2 5 10 34564889 69129778 172824445 345648890