7230040290 has 128 divisors (see below), whose sum is σ = 21230346240. Its totient is φ = 1736280000.

The previous prime is 7230040267. The next prime is 7230040319. The reversal of 7230040290 is 920400327.

7230040290 is a `hidden beast` number, since 72 + 300 + 4 + 0 + 290 = 666.

7230040290 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 306415 + ... + 329165.

It is an arithmetic number, because the mean of its divisors is an integer number (165862080).

Almost surely, 2^7230040290 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7230040290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10615173120).

7230040290 is an abundant number, since it is smaller than the sum of its proper divisors (14000305950).

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

7230040290 is a wasteful number, since it uses less digits than its factorization.

7230040290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22885 (or 22879 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 7230040290 is about 85029.6435956308. The cubic root of 7230040290 is about 1933.6605597198.

The spelling of 7230040290 in words is "seven billion, two hundred thirty million, forty thousand, two hundred ninety".