10387730 has 16 divisors (see below), whose sum is σ = 18892440. Its totient is φ = 4111872.

The previous prime is 10387723. The next prime is 10387739. The reversal of 10387730 is 3778301.

It is a Cunningham number, because it is equal to 3223²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 10004569 + 383161 = 3163^2 + 619^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10387693 and 10387702.

It is not an unprimeable number, because it can be changed into a prime (10387739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4385 + ... + 6324.

Almost surely, 2^10387730 is an apocalyptic number.

10387730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10387730 is a deficient number, since it is larger than the sum of its proper divisors (8504710).

10387730 is a wasteful number, since it uses less digits than its factorization.

10387730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10813.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 10387730 is about 3223.0001551350. Note that the first 3 decimals coincide. The cubic root of 10387730 is about 218.1927005830.

The spelling of 10387730 in words is "ten million, three hundred eighty-seven thousand, seven hundred thirty".