290093940 has 96 divisors (see below), whose sum is σ = 941794560. Its totient is φ = 73991808.

The previous prime is 290093929. The next prime is 290093941. The reversal of 290093940 is 49390092.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 290093895 and 290093904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290093941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 742 + ... + 24098.

It is an arithmetic number, because the mean of its divisors is an integer number (9810360).

Almost surely, 2^290093940 is an apocalyptic number.

290093940 is a gapful number since it is divisible by the number (20) 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 290093940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (470897280).

290093940 is an abundant number, since it is smaller than the sum of its proper divisors (651700620).

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

290093940 is a wasteful number, since it uses less digits than its factorization.

290093940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23398 (or 23390 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 290093940 is about 17032.1443159691. The cubic root of 290093940 is about 661.9820582147.

The spelling of 290093940 in words is "two hundred ninety million, ninety-three thousand, nine hundred forty".