620382240 has 120 divisors (see below), whose sum is σ = 2189478060. Its totient is φ = 165431808.

The previous prime is 620382233. The next prime is 620382247. The reversal of 620382240 is 42283026.

620382240 is a `hidden beast` number, since 620 + 38 + 2 + 2 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (620382233) and next prime (620382247).

It can be written as a sum of positive squares in 2 ways, for example, as 615238416 + 5143824 = 24804^2 + 2268^2 .

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

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

It is not an unprimeable number, because it can be changed into a prime (620382247) 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 19 ways as a sum of consecutive naturals, for example, 10975 + ... + 36894.

Almost surely, 2^620382240 is an apocalyptic number.

620382240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

620382240 is an abundant number, since it is smaller than the sum of its proper divisors (1569095820).

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

620382240 is a wasteful number, since it uses less digits than its factorization.

620382240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47896 (or 47879 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 620382240 is about 24907.4735772218. The cubic root of 620382240 is about 852.8770971533.

The spelling of 620382240 in words is "six hundred twenty million, three hundred eighty-two thousand, two hundred forty".