11951380 has 48 divisors (see below), whose sum is σ = 30199680. Its totient is φ = 3881088.

The previous prime is 11951369. The next prime is 11951411. The reversal of 11951380 is 8315911.

11951380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414 + ... + 4906.

It is an arithmetic number, because the mean of its divisors is an integer number (629160).

Almost surely, 2^11951380 is an apocalyptic number.

11951380 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 11951380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15099840).

11951380 is an abundant number, since it is smaller than the sum of its proper divisors (18248300).

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

11951380 is a wasteful number, since it uses less digits than its factorization.

11951380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528 (or 4526 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 11951380 is about 3457.0767998412. The cubic root of 11951380 is about 228.6332299404.

The spelling of 11951380 in words is "eleven million, nine hundred fifty-one thousand, three hundred eighty".