111622420 has 48 divisors (see below), whose sum is σ = 288505728. Its totient is φ = 35326080.

The previous prime is 111622411. The next prime is 111622429. The reversal of 111622420 is 24226111.

It is an interprime number because it is at equal distance from previous prime (111622411) and next prime (111622429).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111622429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28846 + ... + 32485.

It is an arithmetic number, because the mean of its divisors is an integer number (6010536).

Almost surely, 2^111622420 is an apocalyptic number.

111622420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111622420 is an abundant number, since it is smaller than the sum of its proper divisors (176883308).

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

111622420 is a wasteful number, since it uses less digits than its factorization.

111622420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61360 (or 61358 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 111622420 is about 10565.1512057329. The cubic root of 111622420 is about 481.4861635062.

Adding to 111622420 its reverse (24226111), we get a palindrome (135848531).

The spelling of 111622420 in words is "one hundred eleven million, six hundred twenty-two thousand, four hundred twenty".