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40450023 = 3655487
BaseRepresentation
bin1001101001001…
…1011111100111
32211010002000000
42122103133213
540323400043
64002552343
71000551045
oct232233747
984102000
1040450023
1120918779
12116686b3
1384c3633
14552d395
1538402d3
hex26937e7

40450023 has 14 divisors (see below), whose sum is σ = 60648384. Its totient is φ = 26966196.

The previous prime is 40449989. The next prime is 40450027. The reversal of 40450023 is 32005404.

It is a happy number.

It is not a de Polignac number, because 40450023 - 213 = 40441831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40449978 and 40450005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40450027) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 27015 + ... + 28472.

Almost surely, 240450023 is an apocalyptic number.

40450023 is a deficient number, since it is larger than the sum of its proper divisors (20198361).

40450023 is an frugal number, since it uses more digits than its factorization.

40450023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55505 (or 55490 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 40450023 is about 6360.0332546300. The cubic root of 40450023 is about 343.2729568846.

Adding to 40450023 its reverse (32005404), we get a palindrome (72455427).

The spelling of 40450023 in words is "forty million, four hundred fifty thousand, twenty-three".