1427620500 has 144 divisors (see below), whose sum is σ = 4523697360. Its totient is φ = 379008000.

The previous prime is 1427620487. The next prime is 1427620507. The reversal of 1427620500 is 50267241.

1427620500 is a `hidden beast` number, since 14 + 27 + 620 + 5 + 0 + 0 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 678394116 + 749226384 = 26046^2 + 27372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1427620507) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1263936 + ... + 1265064.

It is an arithmetic number, because the mean of its divisors is an integer number (31414565).

Almost surely, 2^1427620500 is an apocalyptic number.

1427620500 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 1427620500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2261848680).

1427620500 is an abundant number, since it is smaller than the sum of its proper divisors (3096076860).

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

1427620500 is a wasteful number, since it uses less digits than its factorization.

1427620500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435 (or 1420 counting only the distinct ones).

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

The square root of 1427620500 is about 37783.8656042497. The cubic root of 1427620500 is about 1125.9979293415.

Adding to 1427620500 its reverse (50267241), we get a palindrome (1477887741).

The spelling of 1427620500 in words is "one billion, four hundred twenty-seven million, six hundred twenty thousand, five hundred".