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20372023 = 73478387
BaseRepresentation
bin100110110110…
…1101000110111
31102100000011101
41031231220313
520203401043
62004350531
7335105440
oct115555067
942300141
1020372023
1110554891
1269a5447
1342b3869
1429c42c7
151bc624d
hex136da37

20372023 has 8 divisors (see below), whose sum is σ = 23352192. Its totient is φ = 17409336.

The previous prime is 20371999. The next prime is 20372029. The reversal of 20372023 is 32027302.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2k-20372023 is a prime.

It is a super-2 number, since 2×203720232 = 830038642225058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20372029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1765 + ... + 6622.

It is an arithmetic number, because the mean of its divisors is an integer number (2919024).

Almost surely, 220372023 is an apocalyptic number.

20372023 is a deficient number, since it is larger than the sum of its proper divisors (2980169).

20372023 is an equidigital number, since it uses as much as digits as its factorization.

20372023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8741.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 20372023 is about 4513.5377477097. The cubic root of 20372023 is about 273.1144756438.

Adding to 20372023 its reverse (32027302), we get a palindrome (52399325).

The spelling of 20372023 in words is "twenty million, three hundred seventy-two thousand, twenty-three".

Divisors: 1 7 347 2429 8387 58709 2910289 20372023