6454402740 has 108 divisors (see below), whose sum is σ = 20230829892. Its totient is φ = 1665607680.

The previous prime is 6454402687. The next prime is 6454402753. The reversal of 6454402740 is 472044546.

6454402740 is a `hidden beast` number, since 645 + 4 + 4 + 0 + 2 + 7 + 4 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4943214864 + 1511187876 = 70308^2 + 38874^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6454402695 and 6454402704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 154324 + ... + 191636.

It is an arithmetic number, because the mean of its divisors is an integer number (187322499).

Almost surely, 2^6454402740 is an apocalyptic number.

6454402740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6454402740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10115414946).

6454402740 is an abundant number, since it is smaller than the sum of its proper divisors (13776427152).

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

6454402740 is a wasteful number, since it uses less digits than its factorization.

6454402740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37390 (or 37354 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 36.

The square root of 6454402740 is about 80339.2976070864. The cubic root of 6454402740 is about 1861.8814295856.

The spelling of 6454402740 in words is "six billion, four hundred fifty-four million, four hundred two thousand, seven hundred forty".