3815273280 has 672 divisors, whose sum is σ = 16111581696. Its totient is φ = 755564544.

The previous prime is 3815273249. The next prime is 3815273299. The reversal of 3815273280 is 823725183.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10395657 + ... + 10396023.

It is an arithmetic number, because the mean of its divisors is an integer number (23975568).

Almost surely, 2^3815273280 is an apocalyptic number.

3815273280 is a gapful number since it is divisible by the number (30) 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 3815273280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8055790848).

3815273280 is an abundant number, since it is smaller than the sum of its proper divisors (12296308416).

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

3815273280 is a wasteful number, since it uses less digits than its factorization.

3815273280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 3815273280 is about 61767.8984586654. The cubic root of 3815273280 is about 1562.5786412046.

The spelling of 3815273280 in words is "three billion, eight hundred fifteen million, two hundred seventy-three thousand, two hundred eighty".