1203020640 has 192 divisors, whose sum is σ = 4458525120. Its totient is φ = 301916160.

The previous prime is 1203020633. The next prime is 1203020641. The reversal of 1203020640 is 460203021.

It is a happy number.

1203020640 is a `hidden beast` number, since 1 + 2 + 0 + 3 + 0 + 20 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203020641) 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, 65250 + ... + 81630.

It is an arithmetic number, because the mean of its divisors is an integer number (23221485).

Almost surely, 2^1203020640 is an apocalyptic number.

1203020640 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 1203020640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2229262560).

1203020640 is an abundant number, since it is smaller than the sum of its proper divisors (3255504480).

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

1203020640 is a wasteful number, since it uses less digits than its factorization.

1203020640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16422 (or 16408 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1203020640 is about 34684.5879318178. The cubic root of 1203020640 is about 1063.5494634640.

Adding to 1203020640 its reverse (460203021), we get a palindrome (1663223661).

The spelling of 1203020640 in words is "one billion, two hundred three million, twenty thousand, six hundred forty".