263383380 has 192 divisors, whose sum is σ = 934778880. Its totient is φ = 60991488.

The previous prime is 263383313. The next prime is 263383399. The reversal of 263383380 is 83383362.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 118237 + ... + 120443.

It is an arithmetic number, because the mean of its divisors is an integer number (4868640).

Almost surely, 2^263383380 is an apocalyptic number.

263383380 is a gapful number since it is divisible by the number (20) 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 263383380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (467389440).

263383380 is an abundant number, since it is smaller than the sum of its proper divisors (671395500).

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

263383380 is a wasteful number, since it uses less digits than its factorization.

263383380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2255 (or 2247 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The square root of 263383380 is about 16229.0905475322. The cubic root of 263383380 is about 641.0070246658.

The spelling of 263383380 in words is "two hundred sixty-three million, three hundred eighty-three thousand, three hundred eighty".