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72300022 = 236150011
BaseRepresentation
bin1000100111100…
…11010111110110
312001001012222121
410103303113312
5122002100042
611101350154
71535353144
oct423632766
9161035877
1072300022
11378a2093
122026835a
1311c956a2
149860594
156532367
hex44f35f6

72300022 has 4 divisors (see below), whose sum is σ = 108450036. Its totient is φ = 36150010.

The previous prime is 72299993. The next prime is 72300023. The reversal of 72300022 is 22000327.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 72299969 and 72300005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72300023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18075004 + ... + 18075007.

It is an arithmetic number, because the mean of its divisors is an integer number (27112509).

Almost surely, 272300022 is an apocalyptic number.

72300022 is a deficient number, since it is larger than the sum of its proper divisors (36150014).

72300022 is a wasteful number, since it uses less digits than its factorization.

72300022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36150013.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 72300022 is about 8502.9419614625. The cubic root of 72300022 is about 416.5938072781.

Adding to 72300022 its reverse (22000327), we get a palindrome (94300349).

The spelling of 72300022 in words is "seventy-two million, three hundred thousand, twenty-two".

Divisors: 1 2 36150011 72300022