276481920 has 512 divisors, whose sum is σ = 1110412800. Its totient is φ = 57507840.

The previous prime is 276481883. The next prime is 276481949. The reversal of 276481920 is 29184672.

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 63 ways as a sum of consecutive naturals, for example, 5216614 + ... + 5216666.

It is an arithmetic number, because the mean of its divisors is an integer number (2168775).

Almost surely, 2^276481920 is an apocalyptic number.

276481920 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 276481920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (555206400).

276481920 is an abundant number, since it is smaller than the sum of its proper divisors (833930880).

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

276481920 is a wasteful number, since it uses less digits than its factorization.

276481920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 106 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 276481920 is about 16627.7454875879. The cubic root of 276481920 is about 651.4617359891.

The spelling of 276481920 in words is "two hundred seventy-six million, four hundred eighty-one thousand, nine hundred twenty".