7129290 has 64 divisors (see below), whose sum is σ = 20715264. Its totient is φ = 1532928.

The previous prime is 7129277. The next prime is 7129301. The reversal of 7129290 is 929217.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2572 + ... + 4568.

It is an arithmetic number, because the mean of its divisors is an integer number (323676).

Almost surely, 2^7129290 is an apocalyptic number.

7129290 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 7129290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10357632).

7129290 is an abundant number, since it is smaller than the sum of its proper divisors (13585974).

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

7129290 is a wasteful number, since it uses less digits than its factorization.

7129290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031.

The product of its (nonzero) digits is 2268, while the sum is 30.

The square root of 7129290 is about 2670.0730327090. The cubic root of 7129290 is about 192.4636688618.

The spelling of 7129290 in words is "seven million, one hundred twenty-nine thousand, two hundred ninety".