190257426 has 48 divisors (see below), whose sum is σ = 432694080. Its totient is φ = 60302880.

The previous prime is 190257409. The next prime is 190257451. The reversal of 190257426 is 624752091.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73665 + ... + 76203.

It is an arithmetic number, because the mean of its divisors is an integer number (9014460).

Almost surely, 2^190257426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190257426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216347040).

190257426 is an abundant number, since it is smaller than the sum of its proper divisors (242436654).

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

190257426 is a wasteful number, since it uses less digits than its factorization.

190257426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2751 (or 2748 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 190257426 is about 13793.3834137966. The cubic root of 190257426 is about 575.1492250376.

The spelling of 190257426 in words is "one hundred ninety million, two hundred fifty-seven thousand, four hundred twenty-six".