47021040 has 160 divisors (see below), whose sum is σ = 176774400. Its totient is φ = 11393280.

The previous prime is 47021033. The next prime is 47021047. The reversal of 47021040 is 4012074.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (47021033) and next prime (47021047).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47021047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22771 + ... + 24749.

It is an arithmetic number, because the mean of its divisors is an integer number (1104840).

Almost surely, 2^47021040 is an apocalyptic number.

47021040 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 47021040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88387200).

47021040 is an abundant number, since it is smaller than the sum of its proper divisors (129753360).

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

47021040 is a wasteful number, since it uses less digits than its factorization.

47021040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012 (or 2000 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 47021040 is about 6857.1889284167. The cubic root of 47021040 is about 360.9364508318.

The spelling of 47021040 in words is "forty-seven million, twenty-one thousand, forty".