1534420620 has 144 divisors (see below), whose sum is σ = 5112656640. Its totient is φ = 370770048.

The previous prime is 1534420619. The next prime is 1534420627. The reversal of 1534420620 is 260244351.

1534420620 is a `hidden beast` number, since 1 + 5 + 34 + 4 + 2 + 0 + 620 = 666.

It is not an unprimeable number, because it can be changed into a prime (1534420627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 68907 + ... + 88413.

It is an arithmetic number, because the mean of its divisors is an integer number (35504560).

Almost surely, 2^1534420620 is an apocalyptic number.

1534420620 is a gapful number since it is divisible by the number (10) 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 1534420620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2556328320).

1534420620 is an abundant number, since it is smaller than the sum of its proper divisors (3578236020).

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

1534420620 is a wasteful number, since it uses less digits than its factorization.

1534420620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19564 (or 19559 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1534420620 is about 39171.6813527324. The cubic root of 1534420620 is about 1153.4040587974.

Adding to 1534420620 its reverse (260244351), we get a palindrome (1794664971).

The spelling of 1534420620 in words is "one billion, five hundred thirty-four million, four hundred twenty thousand, six hundred twenty".