124220628 has 72 divisors (see below), whose sum is σ = 372171072. Its totient is φ = 35489664.

The previous prime is 124220597. The next prime is 124220639. The reversal of 124220628 is 826022421.

It is a happy number.

124220628 is a `hidden beast` number, since 12 + 4 + 2 + 20 + 628 = 666.

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 23 ways as a sum of consecutive naturals, for example, 2325 + ... + 15932.

Almost surely, 2^124220628 is an apocalyptic number.

124220628 is a gapful number since it is divisible by the number (18) 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 124220628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186085536).

124220628 is an abundant number, since it is smaller than the sum of its proper divisors (247950444).

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

124220628 is a wasteful number, since it uses less digits than its factorization.

124220628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18283 (or 18269 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 124220628 is about 11145.4308126694. The cubic root of 124220628 is about 498.9586701030.

The spelling of 124220628 in words is "one hundred twenty-four million, two hundred twenty thousand, six hundred twenty-eight".