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80630250 = 2353107507
BaseRepresentation
bin1001100111001…
…01000111101010
312121201102220120
410303211013222
5131120132000
612000104110
71666226421
oct463450752
9177642816
1080630250
1141571778
1223005036
131392120c
14a9cc2b8
15712a6a0
hex4ce51ea

80630250 has 32 divisors (see below), whose sum is σ = 201254976. Its totient is φ = 21501200.

The previous prime is 80630191. The next prime is 80630257. The reversal of 80630250 is 5203608.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 80630250.

It is not an unprimeable number, because it can be changed into a prime (80630257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53004 + ... + 54503.

It is an arithmetic number, because the mean of its divisors is an integer number (6289218).

Almost surely, 280630250 is an apocalyptic number.

80630250 is an abundant number, since it is smaller than the sum of its proper divisors (120624726).

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

80630250 is a wasteful number, since it uses less digits than its factorization.

80630250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107527 (or 107517 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 80630250 is about 8979.4348374494. The cubic root of 80630250 is about 432.0155065593.

Adding to 80630250 its reverse (5203608), we get a palindrome (85833858).

The spelling of 80630250 in words is "eighty million, six hundred thirty thousand, two hundred fifty".

Divisors: 1 2 3 5 6 10 15 25 30 50 75 125 150 250 375 750 107507 215014 322521 537535 645042 1075070 1612605 2687675 3225210 5375350 8063025 13438375 16126050 26876750 40315125 80630250