290735420 has 24 divisors (see below), whose sum is σ = 623536704. Its totient is φ = 113819456.

The previous prime is 290735399. The next prime is 290735429. The reversal of 290735420 is 24537092.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290735429) 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, 153707 + ... + 155586.

It is an arithmetic number, because the mean of its divisors is an integer number (25980696).

Almost surely, 2^290735420 is an apocalyptic number.

290735420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

290735420 is an abundant number, since it is smaller than the sum of its proper divisors (332801284).

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

290735420 is a wasteful number, since it uses less digits than its factorization.

290735420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309349 (or 309347 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 290735420 is about 17050.9653685649. The cubic root of 290735420 is about 662.4696423730.

The spelling of 290735420 in words is "two hundred ninety million, seven hundred thirty-five thousand, four hundred twenty".