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1020222 = 23372699
BaseRepresentation
bin11111001000100111110
31220211111000
43321010332
5230121342
633511130
711446260
oct3710476
91824430
101020222
11637565
124124a6
132994a8
141c7b30
1515244c
hexf913e

1020222 has 32 divisors (see below), whose sum is σ = 2592000. Its totient is φ = 291384.

The previous prime is 1020163. The next prime is 1020223. The reversal of 1020222 is 2220201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020223) 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, 972 + ... + 1727.

It is an arithmetic number, because the mean of its divisors is an integer number (81000).

21020222 is an apocalyptic number.

1020222 is an abundant number, since it is smaller than the sum of its proper divisors (1571778).

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

1020222 is a wasteful number, since it uses less digits than its factorization.

1020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717 (or 2711 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1020222 is about 1010.0603942339. The cubic root of 1020222 is about 100.6695733753.

Adding to 1020222 its reverse (2220201), we get a palindrome (3240423).

The spelling of 1020222 in words is "one million, twenty thousand, two hundred twenty-two".

Divisors: 1 2 3 6 7 9 14 18 21 27 42 54 63 126 189 378 2699 5398 8097 16194 18893 24291 37786 48582 56679 72873 113358 145746 170037 340074 510111 1020222