6157440 has 96 divisors (see below), whose sum is σ = 21282300. Its totient is φ = 1640448.

The previous prime is 6157427. The next prime is 6157447. The reversal of 6157440 is 447516.

6157440 is a `hidden beast` number, since 615 + 7 + 4 + 40 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6110784 + 46656 = 2472^2 + 216^2 .

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (6157447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5226 + ... + 6294.

Almost surely, 2^6157440 is an apocalyptic number.

6157440 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 6157440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10641150).

6157440 is an abundant number, since it is smaller than the sum of its proper divisors (15124860).

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

6157440 is a wasteful number, since it uses less digits than its factorization.

6157440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094 (or 1079 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 6157440 is about 2481.4189489081. The cubic root of 6157440 is about 183.2877315415.

The spelling of 6157440 in words is "six million, one hundred fifty-seven thousand, four hundred forty".