290472481 has 8 divisors (see below), whose sum is σ = 313205480. Its totient is φ = 267795072.

The previous prime is 290472473. The next prime is 290472491. The reversal of 290472481 is 184274092.

It can be written as a sum of positive squares in 4 ways, for example, as 30747025 + 259725456 = 5545^2 + 16116^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 290472481 - 2³ = 290472473 is a prime.

It is a super-2 number, since 2×290472481² = 168748524436590722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 290472481.

It is not an unprimeable number, because it can be changed into a prime (290472461) 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, 2700 + ... + 24253.

It is an arithmetic number, because the mean of its divisors is an integer number (39150685).

Almost surely, 2^290472481 is an apocalyptic number.

It is an amenable number.

290472481 is a deficient number, since it is larger than the sum of its proper divisors (22732999).

290472481 is a wasteful number, since it uses less digits than its factorization.

290472481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27795.

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 290472481 is about 17043.2532399187. The cubic root of 290472481 is about 662.2698712278.

The spelling of 290472481 in words is "two hundred ninety million, four hundred seventy-two thousand, four hundred eighty-one".