190402930 has 24 divisors (see below), whose sum is σ = 354155436. Its totient is φ = 73700640.

The previous prime is 190402921. The next prime is 190402939. The reversal of 190402930 is 39204091.

It is a happy number.

190402930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (190402921) and next prime (190402939).

It can be written as a sum of positive squares in 2 ways, for example, as 156075049 + 34327881 = 12493^2 + 5859^2 .

It is not an unprimeable number, because it can be changed into a prime (190402939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 297 + ... + 19516.

Almost surely, 2^190402930 is an apocalyptic number.

190402930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190402930 is a deficient number, since it is larger than the sum of its proper divisors (163752506).

190402930 is a wasteful number, since it uses less digits than its factorization.

190402930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19882 (or 19851 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 190402930 is about 13798.6568186907. The cubic root of 190402930 is about 575.2958074687.

The spelling of 190402930 in words is "one hundred ninety million, four hundred two thousand, nine hundred thirty".