11351640 has 32 divisors (see below), whose sum is σ = 34055280. Its totient is φ = 3027072.

The previous prime is 11351623. The next prime is 11351647. The reversal of 11351640 is 4615311.

11351640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11351647) 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, 47179 + ... + 47418.

Almost surely, 2^11351640 is an apocalyptic number.

11351640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11351640 is an abundant number, since it is smaller than the sum of its proper divisors (22703640).

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

11351640 is a wasteful number, since it uses less digits than its factorization.

11351640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94611 (or 94607 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 11351640 is about 3369.2194941856. The cubic root of 11351640 is about 224.7430152374.

Adding to 11351640 its reverse (4615311), we get a palindrome (15966951).

It can be divided in two parts, 1135 and 1640, that added together give a triangular number (2775 = T₇₄).

The spelling of 11351640 in words is "eleven million, three hundred fifty-one thousand, six hundred forty".