190831424 has 56 divisors (see below), whose sum is σ = 439936128. Its totient is φ = 80432640.

The previous prime is 190831393. The next prime is 190831439. The reversal of 190831424 is 424138091.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23837 + ... + 30819.

Almost surely, 2^190831424 is an apocalyptic number.

190831424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190831424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219968064).

190831424 is an abundant number, since it is smaller than the sum of its proper divisors (249104704).

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

190831424 is an equidigital number, since it uses as much as digits as its factorization.

190831424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7063 (or 7053 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 190831424 is about 13814.1747491481. The cubic root of 190831424 is about 575.7270440254.

The spelling of 190831424 in words is "one hundred ninety million, eight hundred thirty-one thousand, four hundred twenty-four".