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1201033220 = 225277431503
BaseRepresentation
bin100011110010110…
…0101000000000100
310002200221210211212
41013211211000010
54424431030340
6315102150552
741522420402
oct10745450004
93080853755
101201033220
11566a52042
12296282458
13161a9685a
14b571c472
1570691a65
hex47965004

1201033220 has 48 divisors (see below), whose sum is σ = 2542192128. Its totient is φ = 476618880.

The previous prime is 1201033219. The next prime is 1201033237. The reversal of 1201033220 is 223301021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1201033195 and 1201033204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2387489 + ... + 2387991.

It is an arithmetic number, because the mean of its divisors is an integer number (52962336).

Almost surely, 21201033220 is an apocalyptic number.

1201033220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201033220 is an abundant number, since it is smaller than the sum of its proper divisors (1341158908).

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

1201033220 is a wasteful number, since it uses less digits than its factorization.

1201033220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220 (or 1218 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1201033220 is about 34655.9261887487. The cubic root of 1201033220 is about 1062.9634706040.

Adding to 1201033220 its reverse (223301021), we get a palindrome (1424334241).

The spelling of 1201033220 in words is "one billion, two hundred one million, thirty-three thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 277 431 503 554 862 1006 1108 1385 1724 2012 2155 2515 2770 4310 5030 5540 8620 10060 119387 139331 216793 238774 278662 433586 477548 557324 596935 696655 867172 1083965 1193870 1393310 2167930 2387740 2786620 4335860 60051661 120103322 240206644 300258305 600516610 1201033220