7290905238 has 24 divisors (see below), whose sum is σ = 15801938568. Its totient is φ = 2429536032.

The previous prime is 7290905231. The next prime is 7290905261. The reversal of 7290905238 is 8325090927.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 7290905193 and 7290905202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7290905231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3556 + ... + 120807.

It is an arithmetic number, because the mean of its divisors is an integer number (658414107).

Almost surely, 2^7290905238 is an apocalyptic number.

7290905238 is an abundant number, since it is smaller than the sum of its proper divisors (8511033330).

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

7290905238 is a wasteful number, since it uses less digits than its factorization.

7290905238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127628 (or 127625 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 7290905238 is about 85386.7977968491. The cubic root of 7290905238 is about 1939.0714759847.

The spelling of 7290905238 in words is "seven billion, two hundred ninety million, nine hundred five thousand, two hundred thirty-eight".