13451420 has 24 divisors (see below), whose sum is σ = 29910384. Its totient is φ = 5063936.

The previous prime is 13451419. The next prime is 13451429. The reversal of 13451420 is 2415431.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 13451392 and 13451401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13451429) 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, 19442 + ... + 20121.

It is an arithmetic number, because the mean of its divisors is an integer number (1246266).

Almost surely, 2^13451420 is an apocalyptic number.

13451420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13451420 is an abundant number, since it is smaller than the sum of its proper divisors (16458964).

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

13451420 is a wasteful number, since it uses less digits than its factorization.

13451420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39589 (or 39587 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 13451420 is about 3667.6177554374. The cubic root of 13451420 is about 237.8241999081.

Adding to 13451420 its reverse (2415431), we get a palindrome (15866851).

The spelling of 13451420 in words is "thirteen million, four hundred fifty-one thousand, four hundred twenty".