1111623480 has 256 divisors, whose sum is σ = 4077734400. Its totient is φ = 267125760.

The previous prime is 1111623467. The next prime is 1111623497. The reversal of 1111623480 is 843261111.

It is a happy number.

It is a super-2 number, since 2×1111623480² = 2471413522574620800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1627219 + ... + 1627901.

It is an arithmetic number, because the mean of its divisors is an integer number (15928650).

Almost surely, 2^1111623480 is an apocalyptic number.

1111623480 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 1111623480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2038867200).

1111623480 is an abundant number, since it is smaller than the sum of its proper divisors (2966110920).

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

1111623480 is a wasteful number, since it uses less digits than its factorization.

1111623480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1111623480 is about 33341.0179808596. The cubic root of 1111623480 is about 1035.9033491127.

Adding to 1111623480 its reverse (843261111), we get a palindrome (1954884591).

It can be divided in two parts, 11116 and 23480, that added together give a square (34596 = 186²).

The spelling of 1111623480 in words is "one billion, one hundred eleven million, six hundred twenty-three thousand, four hundred eighty".