47720232 has 128 divisors (see below), whose sum is σ = 155769600. Its totient is φ = 13250304.

The previous prime is 47720227. The next prime is 47720243. The reversal of 47720232 is 23202774.

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

It is a junction number, because it is equal to n+sod(n) for n = 47720196 and 47720205.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 55518 + ... + 56370.

It is an arithmetic number, because the mean of its divisors is an integer number (1216950).

Almost surely, 2^47720232 is an apocalyptic number.

47720232 is a gapful number since it is divisible by the number (42) 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 47720232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77884800).

47720232 is an abundant number, since it is smaller than the sum of its proper divisors (108049368).

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

47720232 is a wasteful number, since it uses less digits than its factorization.

47720232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 47720232 is about 6907.9832078545. The cubic root of 47720232 is about 362.7166698343.

The spelling of 47720232 in words is "forty-seven million, seven hundred twenty thousand, two hundred thirty-two".