290166474 has 32 divisors (see below), whose sum is σ = 629193600. Its totient is φ = 88679232.

The previous prime is 290166473. The next prime is 290166491. The reversal of 290166474 is 474661092.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (290166473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 862 + ... + 24105.

It is an arithmetic number, because the mean of its divisors is an integer number (19662300).

Almost surely, 2^290166474 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290166474, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314596800).

290166474 is an abundant number, since it is smaller than the sum of its proper divisors (339027126).

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

290166474 is a wasteful number, since it uses less digits than its factorization.

290166474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25134.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 290166474 is about 17034.2735096041. The cubic root of 290166474 is about 662.0372267867.

The spelling of 290166474 in words is "two hundred ninety million, one hundred sixty-six thousand, four hundred seventy-four".