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276488940 = 223571379641

276488940 has 192 divisors, whose sum is σ = 966389760. Its totient is φ = 57507840.

The previous prime is 276488939. The next prime is 276488983. The reversal of 276488940 is 49884672.

It is a super-2 number, since 2×2764889402 = 152892267884647200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 276488940.

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, 431020 + ... + 431660.

It is an arithmetic number, because the mean of its divisors is an integer number (5033280).

Almost surely, 2276488940 is an apocalyptic number.

276488940 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 276488940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (483194880).

276488940 is an abundant number, since it is smaller than the sum of its proper divisors (689900820).

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

276488940 is a wasteful number, since it uses less digits than its factorization.

276488940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The square root of 276488940 is about 16627.9565792072. The cubic root of 276488940 is about 651.4672495777.

The spelling of 276488940 in words is "two hundred seventy-six million, four hundred eighty-eight thousand, nine hundred forty".