190820224 has 32 divisors (see below), whose sum is σ = 434458800. Its totient is φ = 81779712.

The previous prime is 190820153. The next prime is 190820297. The reversal of 190820224 is 422028091.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 190820192 and 190820201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105589 + ... + 107380.

Almost surely, 2^190820224 is an apocalyptic number.

190820224 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

190820224 is an abundant number, since it is smaller than the sum of its proper divisors (243638576).

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

190820224 is an equidigital number, since it uses as much as digits as its factorization.

190820224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212990 (or 212978 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 190820224 is about 13813.7693624876. The cubic root of 190820224 is about 575.7157805607.

The spelling of 190820224 in words is "one hundred ninety million, eight hundred twenty thousand, two hundred twenty-four".