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344748020 = 22517237401
BaseRepresentation
bin10100100011000…
…110111111110100
3220000201000101012
4110203012333310
51201223414040
654113051352
711354211161
oct2443067764
9800630335
10344748020
11167668321
1297556b58
1356567816
1433b01068
15203ec865
hex148c6ff4

344748020 has 12 divisors (see below), whose sum is σ = 723970884. Its totient is φ = 137899200.

The previous prime is 344748007. The next prime is 344748023. The reversal of 344748020 is 20847443.

It can be written as a sum of positive squares in 2 ways, for example, as 227285776 + 117462244 = 15076^2 + 10838^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344748023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8618681 + ... + 8618720.

It is an arithmetic number, because the mean of its divisors is an integer number (60330907).

Almost surely, 2344748020 is an apocalyptic number.

It is an amenable number.

344748020 is an abundant number, since it is smaller than the sum of its proper divisors (379222864).

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

344748020 is a wasteful number, since it uses less digits than its factorization.

344748020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17237410 (or 17237408 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 344748020 is about 18567.3913084203. The cubic root of 344748020 is about 701.1871149111.

The spelling of 344748020 in words is "three hundred forty-four million, seven hundred forty-eight thousand, twenty".

Divisors: 1 2 4 5 10 20 17237401 34474802 68949604 86187005 172374010 344748020