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20370426 = 233395071
BaseRepresentation
bin100110110110…
…1001111111010
31102022220222020
41031231033322
520203323201
62004335310
7335100666
oct115551772
942286866
1020370426
111055366a
1269a4536
1342b2c0b
1429c38a6
151bc5a36
hex136d3fa

20370426 has 8 divisors (see below), whose sum is σ = 40740864. Its totient is φ = 6790140.

The previous prime is 20370377. The next prime is 20370439. The reversal of 20370426 is 62407302.

Adding to 20370426 its reverse (62407302), we get a palindrome (82777728).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20370396 and 20370405.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1697530 + ... + 1697541.

It is an arithmetic number, because the mean of its divisors is an integer number (5092608).

Almost surely, 220370426 is an apocalyptic number.

20370426 is the 2855-th centered pentagonal number.

20370426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20370426 is a wasteful number, since it uses less digits than its factorization.

20370426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3395076.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20370426 is about 4513.3608320186. The cubic root of 20370426 is about 273.1073388102.

The spelling of 20370426 in words is "twenty million, three hundred seventy thousand, four hundred twenty-six".

Divisors: 1 2 3 6 3395071 6790142 10185213 20370426