190002540 has 384 divisors, whose sum is σ = 731566080. Its totient is φ = 35684352.

The previous prime is 190002539. The next prime is 190002551. The reversal of 190002540 is 45200091.

It is a super-2 number, since 2×190002540² = 72201930412903200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2134816 + ... + 2134904.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^190002540 is an apocalyptic number.

190002540 is a gapful number since it is divisible by the number (10) 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 190002540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (365783040).

190002540 is an abundant number, since it is smaller than the sum of its proper divisors (541563540).

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

190002540 is a wasteful number, since it uses less digits than its factorization.

190002540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 190002540 is about 13784.1408872661. The cubic root of 190002540 is about 574.8922696723.

The spelling of 190002540 in words is "one hundred ninety million, two thousand, five hundred forty".