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245125644 = 22320427137
BaseRepresentation
bin11101001110001…
…01001000001100
3122002020200011120
432213011020030
51000223010034
640153520540
76034351011
oct1647051014
9562220146
10245125644
11116404585
126a113150
133ba26b7a
14247ab708
15167bec49
hexe9c520c

245125644 has 12 divisors (see below), whose sum is σ = 571959864. Its totient is φ = 81708544.

The previous prime is 245125579. The next prime is 245125667. The reversal of 245125644 is 446521542.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

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, 10213557 + ... + 10213580.

It is an arithmetic number, because the mean of its divisors is an integer number (47663322).

Almost surely, 2245125644 is an apocalyptic number.

It is an amenable number.

245125644 is an abundant number, since it is smaller than the sum of its proper divisors (326834220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245125644 is a wasteful number, since it uses less digits than its factorization.

245125644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20427144 (or 20427142 counting only the distinct ones).

The product of its digits is 38400, while the sum is 33.

The square root of 245125644 is about 15656.4888784172. The cubic root of 245125644 is about 625.8394216360.

The spelling of 245125644 in words is "two hundred forty-five million, one hundred twenty-five thousand, six hundred forty-four".

Divisors: 1 2 3 4 6 12 20427137 40854274 61281411 81708548 122562822 245125644