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23780413 = 238312457
BaseRepresentation
bin101101010110…
…1110000111101
31122202011121001
41122231300331
522041433123
62205410301
7406062436
oct132556075
948664531
1023780413
1112472638
127b69991
134c08067
14323048d
15214b0ad
hex16adc3d

23780413 has 8 divisors (see below), whose sum is σ = 25115328. Its totient is φ = 22470624.

The previous prime is 23780359. The next prime is 23780431. The reversal of 23780413 is 31408732.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23780413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23780443) 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, 4320 + ... + 8137.

It is an arithmetic number, because the mean of its divisors is an integer number (3139416).

Almost surely, 223780413 is an apocalyptic number.

23780413 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

23780413 is a deficient number, since it is larger than the sum of its proper divisors (1334915).

23780413 is a wasteful number, since it uses less digits than its factorization.

23780413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12563.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 23780413 is about 4876.5164820802. The cubic root of 23780413 is about 287.5674971957.

The spelling of 23780413 in words is "twenty-three million, seven hundred eighty thousand, four hundred thirteen".

Divisors: 1 23 83 1909 12457 286511 1033931 23780413