48640290 has 32 divisors (see below), whose sum is σ = 116928576. Its totient is φ = 12949440.

The previous prime is 48640289. The next prime is 48640297. The reversal of 48640290 is 9204684.

It is a super-2 number, since 2×48640290² = 4731755622568200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (48640297) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 27369 + ... + 29091.

It is an arithmetic number, because the mean of its divisors is an integer number (3654018).

Almost surely, 2^48640290 is an apocalyptic number.

48640290 is an abundant number, since it is smaller than the sum of its proper divisors (68288286).

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

48640290 is a wasteful number, since it uses less digits than its factorization.

48640290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 48640290 is about 6974.2591004350. The cubic root of 48640290 is about 365.0329362910.

The spelling of 48640290 in words is "forty-eight million, six hundred forty thousand, two hundred ninety".