6151440 has 120 divisors (see below), whose sum is σ = 20409408. Its totient is φ = 1532160.

The previous prime is 6151427. The next prime is 6151477. The reversal of 6151440 is 441516.

It is a tau number, because it is divible by the number of its divisors (120).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86605 + ... + 86675.

Almost surely, 2^6151440 is an apocalyptic number.

6151440 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 6151440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10204704).

6151440 is an abundant number, since it is smaller than the sum of its proper divisors (14257968).

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

6151440 is a wasteful number, since it uses less digits than its factorization.

6151440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 6151440 is about 2480.2096685563. The cubic root of 6151440 is about 183.2281784488.

Adding to 6151440 its reverse (441516), we get a palindrome (6592956).

The spelling of 6151440 in words is "six million, one hundred fifty-one thousand, four hundred forty".