47205390 has 32 divisors (see below), whose sum is σ = 115706880. Its totient is φ = 12319904.

The previous prime is 47205349. The next prime is 47205401. The reversal of 47205390 is 9350274.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15330 + ... + 18149.

It is an arithmetic number, because the mean of its divisors is an integer number (3615840).

Almost surely, 2^47205390 is an apocalyptic number.

47205390 is an abundant number, since it is smaller than the sum of its proper divisors (68501490).

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

47205390 is a wasteful number, since it uses less digits than its factorization.

47205390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33536.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 47205390 is about 6870.6178761448. The cubic root of 47205390 is about 361.4075297844.

The spelling of 47205390 in words is "forty-seven million, two hundred five thousand, three hundred ninety".