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20295080450 = 252201472
BaseRepresentation
bin10010111001101011…
…100101101000000010
31221101101202220112022
4102321223211220002
5313031020033300
613153510001442
71315634223521
oct227153455002
957341686468
1020295080450
118675053367
123b24946282
131bb5872458
14da75784b8
157dbb07285
hex4b9ae5a02

20295080450 has 18 divisors (see below), whose sum is σ = 37750723401. Its totient is φ = 8117629240.

The previous prime is 20295080431. The next prime is 20295080459. The reversal of 20295080450 is 5408059202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19889178841 + 405901609 = 141029^2 + 20147^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=100735.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20295080450.

It is not an unprimeable number, because it can be changed into a prime (20295080459) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 997277 + ... + 1017423.

Almost surely, 220295080450 is an apocalyptic number.

20295080450 is a deficient number, since it is larger than the sum of its proper divisors (17455642951).

20295080450 is an frugal number, since it uses more digits than its factorization.

20295080450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40306 (or 20154 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

Multiplying 20295080450 by its product of nonzero digits (28800), we get a square (584498316960000 = 241764002).

The spelling of 20295080450 in words is "twenty billion, two hundred ninety-five million, eighty thousand, four hundred fifty".

Divisors: 1 2 5 10 25 50 20147 40294 100735 201470 503675 1007350 405901609 811803218 2029508045 4059016090 10147540225 20295080450