11401560 has 224 divisors, whose sum is σ = 42495840. Its totient is φ = 2737152.

The previous prime is 11401549. The next prime is 11401561. The reversal of 11401560 is 6510411.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11401561) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 495709 + ... + 495731.

Almost surely, 2^11401560 is an apocalyptic number.

11401560 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 11401560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21247920).

11401560 is an abundant number, since it is smaller than the sum of its proper divisors (31094280).

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

11401560 is a wasteful number, since it uses less digits than its factorization.

11401560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 50 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 11401560 is about 3376.6196113865. The cubic root of 11401560 is about 225.0719769723.

Adding to 11401560 its reverse (6510411), we get a palindrome (17911971).

The spelling of 11401560 in words is "eleven million, four hundred one thousand, five hundred sixty".