190621044 has 18 divisors (see below), whose sum is σ = 481847730. Its totient is φ = 63540336.

The previous prime is 190621007. The next prime is 190621061. The reversal of 190621044 is 440126091.

190621044 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 185504400 + 5116644 = 13620^2 + 2262^2 .

It is a tau number, because it is divible by the number of its divisors (18).

190621044 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 190620999 and 190621017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2647479 + ... + 2647550.

Almost surely, 2^190621044 is an apocalyptic number.

It is an amenable number.

190621044 is an abundant number, since it is smaller than the sum of its proper divisors (291226686).

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

190621044 is a wasteful number, since it uses less digits than its factorization.

190621044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5295039 (or 5295034 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 190621044 is about 13806.5580069762. The cubic root of 190621044 is about 575.5153982529.

The spelling of 190621044 in words is "one hundred ninety million, six hundred twenty-one thousand, forty-four".