290620134 has 144 divisors (see below), whose sum is σ = 799987968. Its totient is φ = 74536704.

The previous prime is 290620123. The next prime is 290620139. The reversal of 290620134 is 431026092.

290620134 is a `hidden beast` number, since 2 + 9 + 0 + 620 + 1 + 34 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 290620098 and 290620107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (290620139) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 837349 + ... + 837695.

It is an arithmetic number, because the mean of its divisors is an integer number (5555472).

Almost surely, 2^290620134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 290620134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399993984).

290620134 is an abundant number, since it is smaller than the sum of its proper divisors (509367834).

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

290620134 is a wasteful number, since it uses less digits than its factorization.

290620134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 290620134 is about 17047.5844036626. The cubic root of 290620134 is about 662.3820672480.

The spelling of 290620134 in words is "two hundred ninety million, six hundred twenty thousand, one hundred thirty-four".