392290290 has 160 divisors (see below), whose sum is σ = 1234316160. Its totient is φ = 87526656.

The previous prime is 392290273. The next prime is 392290291. The reversal of 392290290 is 92092293.

It is not an unprimeable number, because it can be changed into a prime (392290291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 243006 + ... + 244614.

It is an arithmetic number, because the mean of its divisors is an integer number (7714476).

Almost surely, 2^392290290 is an apocalyptic number.

392290290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 392290290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (617158080).

392290290 is an abundant number, since it is smaller than the sum of its proper divisors (842025870).

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

392290290 is a wasteful number, since it uses less digits than its factorization.

392290290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1678 (or 1669 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 392290290 is about 19806.3194460758. The cubic root of 392290290 is about 732.0417538666.

The spelling of 392290290 in words is "three hundred ninety-two million, two hundred ninety thousand, two hundred ninety".