290023000 has 32 divisors (see below), whose sum is σ = 678656160. Its totient is φ = 116008800.

The previous prime is 290022991. The next prime is 290023007. The reversal of 290023000 is 320092.

It is a super-2 number, since 2×290023000² = 168226681058000000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290023007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144012 + ... + 146011.

It is an arithmetic number, because the mean of its divisors is an integer number (21208005).

Almost surely, 2^290023000 is an apocalyptic number.

290023000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290023000 is an abundant number, since it is smaller than the sum of its proper divisors (388633160).

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

290023000 is a wasteful number, since it uses less digits than its factorization.

290023000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290044 (or 290030 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 290023000 is about 17030.0616557897. The cubic root of 290023000 is about 661.9280931259.

Adding to 290023000 its reverse (320092), we get a palindrome (290343092).

The spelling of 290023000 in words is "two hundred ninety million, twenty-three thousand".