Search a number
-
+
21470213413 = 1113914041997
BaseRepresentation
bin10011111111101110…
…010111010100100101
32001102021222211220101
4103333232113110211
5322432333312123
613510245104101
71360023542245
oct237756272445
961367884811
1021470213413
119118415130
1241b23b8031
13204216b0bc
141079673b25
15859d7eaad
hex4ffb97525

21470213413 has 8 divisors (see below), whose sum is σ = 23590556640. Its totient is φ = 19377954480.

The previous prime is 21470213411. The next prime is 21470213419. The reversal of 21470213413 is 31431207412.

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

It is a cyclic number.

It is not a de Polignac number, because 21470213413 - 21 = 21470213411 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 (21470213411) 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, 7019470 + ... + 7022527.

It is an arithmetic number, because the mean of its divisors is an integer number (2948819580).

Almost surely, 221470213413 is an apocalyptic number.

It is an amenable number.

21470213413 is a deficient number, since it is larger than the sum of its proper divisors (2120343227).

21470213413 is a wasteful number, since it uses less digits than its factorization.

21470213413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14042147.

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

The spelling of 21470213413 in words is "twenty-one billion, four hundred seventy million, two hundred thirteen thousand, four hundred thirteen".

Divisors: 1 11 139 1529 14041997 154461967 1951837583 21470213413