190047390 has 64 divisors (see below), whose sum is σ = 512580096. Its totient is φ = 44744832.

The previous prime is 190047383. The next prime is 190047433. The reversal of 190047390 is 93740091.

It is a super-2 number, since 2×190047390² = 72236020891624200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1624 + ... + 19563.

It is an arithmetic number, because the mean of its divisors is an integer number (8009064).

Almost surely, 2^190047390 is an apocalyptic number.

190047390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 190047390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256290048).

190047390 is an abundant number, since it is smaller than the sum of its proper divisors (322532706).

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

190047390 is a wasteful number, since it uses less digits than its factorization.

190047390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21233.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 190047390 is about 13785.7676608885. The cubic root of 190047390 is about 574.9375004532.

The spelling of 190047390 in words is "one hundred ninety million, forty-seven thousand, three hundred ninety".