6420492 has 96 divisors (see below), whose sum is σ = 19051200. Its totient is φ = 1852416.

The previous prime is 6420487. The next prime is 6420511. The reversal of 6420492 is 2940246.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23734 + ... + 24002.

It is an arithmetic number, because the mean of its divisors is an integer number (198450).

Almost surely, 2^6420492 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6420492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9525600).

6420492 is an abundant number, since it is smaller than the sum of its proper divisors (12630708).

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

6420492 is a wasteful number, since it uses less digits than its factorization.

6420492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 304 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 6420492 is about 2533.8689784596. The cubic root of 6420492 is about 185.8614993917.

The spelling of 6420492 in words is "six million, four hundred twenty thousand, four hundred ninety-two".