60391440 has 160 divisors (see below), whose sum is σ = 211415040. Its totient is φ = 15842304.

The previous prime is 60391439. The next prime is 60391447. The reversal of 60391440 is 4419306.

60391440 is a `hidden beast` number, since 603 + 9 + 14 + 40 = 666.

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

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (60391447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157489 + ... + 157871.

It is an arithmetic number, because the mean of its divisors is an integer number (1321344).

Almost surely, 2^60391440 is an apocalyptic number.

60391440 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 60391440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105707520).

60391440 is an abundant number, since it is smaller than the sum of its proper divisors (151023600).

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

60391440 is a wasteful number, since it uses less digits than its factorization.

60391440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 60391440 is about 7771.1929586132. The cubic root of 60391440 is about 392.3362726051.

The spelling of 60391440 in words is "sixty million, three hundred ninety-one thousand, four hundred forty".