10919640 has 32 divisors (see below), whose sum is σ = 32759280. Its totient is φ = 2911872.

The previous prime is 10919621. The next prime is 10919659. The reversal of 10919640 is 4691901.

It is an interprime number because it is at equal distance from previous prime (10919621) and next prime (10919659).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 10919598 and 10919607.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 45379 + ... + 45618.

Almost surely, 2^10919640 is an apocalyptic number.

10919640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10919640 is an abundant number, since it is smaller than the sum of its proper divisors (21839640).

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

10919640 is a wasteful number, since it uses less digits than its factorization.

10919640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91011 (or 91007 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 10919640 is about 3304.4878574448. The cubic root of 10919640 is about 221.8551120175.

It can be divided in two parts, 1091 and 9640, that added together give a triangular number (10731 = T₁₄₆).

The spelling of 10919640 in words is "ten million, nine hundred nineteen thousand, six hundred forty".