276573640 has 96 divisors (see below), whose sum is σ = 734185080. Its totient is φ = 93477888.

The previous prime is 276573607. The next prime is 276573677. The reversal of 276573640 is 46375672.

It can be written as a sum of positive squares in 4 ways, for example, as 246301636 + 30272004 = 15694^2 + 5502^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 276573593 and 276573602.

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 23 ways as a sum of consecutive naturals, for example, 142114 + ... + 144046.

Almost surely, 2^276573640 is an apocalyptic number.

276573640 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 276573640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (367092540).

276573640 is an abundant number, since it is smaller than the sum of its proper divisors (457611440).

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

276573640 is a wasteful number, since it uses less digits than its factorization.

276573640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031 (or 2020 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 40.

The square root of 276573640 is about 16630.5032996599. The cubic root of 276573640 is about 651.5337665752.

The spelling of 276573640 in words is "two hundred seventy-six million, five hundred seventy-three thousand, six hundred forty".