47390520 has 64 divisors (see below), whose sum is σ = 144000000. Its totient is φ = 12475008.

The previous prime is 47390501. The next prime is 47390531. The reversal of 47390520 is 2509374.

It is a super-2 number, since 2×47390520² = 4491722771740800, which contains 22 as substring.

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, 6981 + ... + 11979.

It is an arithmetic number, because the mean of its divisors is an integer number (2250000).

Almost surely, 2^47390520 is an apocalyptic number.

47390520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47390520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72000000).

47390520 is an abundant number, since it is smaller than the sum of its proper divisors (96609480).

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

47390520 is a wasteful number, since it uses less digits than its factorization.

47390520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5092 (or 5088 counting only the distinct ones).

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

The square root of 47390520 is about 6884.0772802170. The cubic root of 47390520 is about 361.8793692666.

Adding to 47390520 its reverse (2509374), we get a palindrome (49899894).

The spelling of 47390520 in words is "forty-seven million, three hundred ninety thousand, five hundred twenty".