276097920 has 128 divisors (see below), whose sum is σ = 1005834240. Its totient is φ = 63105024.

The previous prime is 276097919. The next prime is 276097933. The reversal of 276097920 is 29790672.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×276097920² = 152460122856652800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3169 + ... + 23711.

It is an arithmetic number, because the mean of its divisors is an integer number (7858080).

Almost surely, 2^276097920 is an apocalyptic number.

276097920 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 276097920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (502917120).

276097920 is an abundant number, since it is smaller than the sum of its proper divisors (729736320).

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

276097920 is a wasteful number, since it uses less digits than its factorization.

276097920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20572 (or 20560 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 276097920 is about 16616.1945101759. The cubic root of 276097920 is about 651.1599956912.

The spelling of 276097920 in words is "two hundred seventy-six million, ninety-seven thousand, nine hundred twenty".