290994140 has 24 divisors (see below), whose sum is σ = 611666160. Its totient is φ = 116287488.

The previous prime is 290994113. The next prime is 290994191. The reversal of 290994140 is 41499092.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 290994094 and 290994103.

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, 16751 + ... + 29369.

It is an arithmetic number, because the mean of its divisors is an integer number (25486090).

Almost surely, 2^290994140 is an apocalyptic number.

290994140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290994140 is an abundant number, since it is smaller than the sum of its proper divisors (320672020).

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

290994140 is a wasteful number, since it uses less digits than its factorization.

290994140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13781 (or 13779 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 290994140 is about 17058.5503487254. The cubic root of 290994140 is about 662.6660905513. Note that the first 3 decimals are identical.

The spelling of 290994140 in words is "two hundred ninety million, nine hundred ninety-four thousand, one hundred forty".