290045380 has 12 divisors (see below), whose sum is σ = 609095340. Its totient is φ = 116018144.

The previous prime is 290045369. The next prime is 290045383. The reversal of 290045380 is 83540092.

It can be written as a sum of positive squares in 2 ways, for example, as 157703364 + 132342016 = 12558^2 + 11504^2 .

It is not an unprimeable number, because it can be changed into a prime (290045383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7251115 + ... + 7251154.

It is an arithmetic number, because the mean of its divisors is an integer number (50757945).

Almost surely, 2^290045380 is an apocalyptic number.

290045380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290045380 is an abundant number, since it is smaller than the sum of its proper divisors (319049960).

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

290045380 is a wasteful number, since it uses less digits than its factorization.

290045380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14502278 (or 14502276 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 290045380 is about 17030.7187164840. The cubic root of 290045380 is about 661.9451188672.

The spelling of 290045380 in words is "two hundred ninety million, forty-five thousand, three hundred eighty".