19960290 has 128 divisors (see below), whose sum is σ = 62208000. Its totient is φ = 4459968.

The previous prime is 19960271. The next prime is 19960307. The reversal of 19960290 is 9206991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 111421 + ... + 111599.

It is an arithmetic number, because the mean of its divisors is an integer number (486000).

Almost surely, 2^19960290 is an apocalyptic number.

19960290 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 19960290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31104000).

19960290 is an abundant number, since it is smaller than the sum of its proper divisors (42247710).

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

19960290 is a wasteful number, since it uses less digits than its factorization.

19960290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 36.

The square root of 19960290 is about 4467.6940360772. The cubic root of 19960290 is about 271.2619934244.

The spelling of 19960290 in words is "nineteen million, nine hundred sixty thousand, two hundred ninety".