1067387840 has 112 divisors (see below), whose sum is σ = 2764487232. Its totient is φ = 390905856.

The previous prime is 1067387831. The next prime is 1067387861. The reversal of 1067387840 is 487837601.

It is a super-2 number, since 2×1067387840² = 2278633601959731200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1067387791 and 1067387800.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 198629 + ... + 203931.

Almost surely, 2^1067387840 is an apocalyptic number.

1067387840 is a gapful number since it is divisible by the number (10) 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 1067387840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1382243616).

1067387840 is an abundant number, since it is smaller than the sum of its proper divisors (1697099392).

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

1067387840 is a wasteful number, since it uses less digits than its factorization.

1067387840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5374 (or 5364 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 1067387840 is about 32670.9020383582. The cubic root of 1067387840 is about 1021.9761254528.

The spelling of 1067387840 in words is "one billion, sixty-seven million, three hundred eighty-seven thousand, eight hundred forty".