1263020430 has 64 divisors (see below), whose sum is σ = 3468469248. Its totient is φ = 288341760.

The previous prime is 1263020401. The next prime is 1263020471. The reversal of 1263020430 is 340203621.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1263020397 and 1263020406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196975 + ... + 203285.

It is an arithmetic number, because the mean of its divisors is an integer number (54194832).

Almost surely, 2^1263020430 is an apocalyptic number.

1263020430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1263020430 is an abundant number, since it is smaller than the sum of its proper divisors (2205448818).

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

1263020430 is a wasteful number, since it uses less digits than its factorization.

1263020430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7281.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 1263020430 is about 35538.9987197163. The cubic root of 1263020430 is about 1080.9446553116.

The spelling of 1263020430 in words is "one billion, two hundred sixty-three million, twenty thousand, four hundred thirty".