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23003004 = 2231916917
BaseRepresentation
bin101011110111…
…1111101111100
31121021200012010
41113233331330
521342044004
62141011220
7366344103
oct127577574
947250163
1023003004
1111a91552
127853b10
1349c525b
1430ab03a
152045a89
hex15eff7c

23003004 has 12 divisors (see below), whose sum is σ = 53673704. Its totient is φ = 7667664.

The previous prime is 23002999. The next prime is 23003021. The reversal of 23003004 is 40030032.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Harshad number since it is a multiple of its sum of digits (12), and also a Moran number because the ratio is a prime number: 1916917 = 23003004 / (2 + 3 + 0 + 0 + 3 + 0 + 0 + 4).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958447 + ... + 958470.

Almost surely, 223003004 is an apocalyptic number.

It is an amenable number.

23003004 is an abundant number, since it is smaller than the sum of its proper divisors (30670700).

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

23003004 is a wasteful number, since it uses less digits than its factorization.

23003004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916924 (or 1916922 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 23003004 is about 4796.1447017370. The cubic root of 23003004 is about 284.3990785714.

Adding to 23003004 its reverse (40030032), we get a palindrome (63033036).

The spelling of 23003004 in words is "twenty-three million, three thousand, four".

Divisors: 1 2 3 4 6 12 1916917 3833834 5750751 7667668 11501502 23003004