11503730 has 48 divisors (see below), whose sum is σ = 25522776. Its totient is φ = 3709440.

The previous prime is 11503729. The next prime is 11503733. The reversal of 11503730 is 3730511.

It is a happy number.

11503730 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10233601 + 1270129 = 3199^2 + 1127^2 .

11503730 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (11503733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7640 + ... + 9020.

Almost surely, 2^11503730 is an apocalyptic number.

11503730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11503730 is an abundant number, since it is smaller than the sum of its proper divisors (14019046).

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

11503730 is a wasteful number, since it uses less digits than its factorization.

11503730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 20.

The square root of 11503730 is about 3391.7149054719. The cubic root of 11503730 is about 225.7422728361.

The spelling of 11503730 in words is "eleven million, five hundred three thousand, seven hundred thirty".