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1012411220 = 22550620561
BaseRepresentation
bin111100010110000…
…010101101010100
32121120000211002212
4330112002231110
54033134124340
6244243252552
734042232132
oct7426025524
92546024085
101012411220
1147a530597
1224307a158
131319943c2
149865c752
155dd33a65
hex3c582b54

1012411220 has 12 divisors (see below), whose sum is σ = 2126063604. Its totient is φ = 404964480.

The previous prime is 1012411187. The next prime is 1012411229. The reversal of 1012411220 is 221142101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 492662416 + 519748804 = 22196^2 + 22798^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1012411195 and 1012411204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012411229) 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, 25310261 + ... + 25310300.

It is an arithmetic number, because the mean of its divisors is an integer number (177171967).

Almost surely, 21012411220 is an apocalyptic number.

1012411220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012411220 is an abundant number, since it is smaller than the sum of its proper divisors (1113652384).

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

1012411220 is a wasteful number, since it uses less digits than its factorization.

1012411220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50620570 (or 50620568 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1012411220 is about 31818.4100797007. The cubic root of 1012411220 is about 1004.1200750025.

Adding to 1012411220 its reverse (221142101), we get a palindrome (1233553321).

The spelling of 1012411220 in words is "one billion, twelve million, four hundred eleven thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 50620561 101241122 202482244 253102805 506205610 1012411220