6453930 has 64 divisors (see below), whose sum is σ = 17987328. Its totient is φ = 1451520.

The previous prime is 6453929. The next prime is 6453943. The reversal of 6453930 is 393546.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 15.

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, 15120 + ... + 15540.

It is an arithmetic number, because the mean of its divisors is an integer number (281052).

Almost surely, 2^6453930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6453930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8993664).

6453930 is an abundant number, since it is smaller than the sum of its proper divisors (11533398).

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

6453930 is a wasteful number, since it uses less digits than its factorization.

6453930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 6453930 is about 2540.4586200133. The cubic root of 6453930 is about 186.1835971865.

The spelling of 6453930 in words is "six million, four hundred fifty-three thousand, nine hundred thirty".