47540000 has 60 divisors (see below), whose sum is σ = 117004734. Its totient is φ = 19008000.

The previous prime is 47539997. The next prime is 47540021. The reversal of 47540000 is 4574.

It can be written as a sum of positive squares in 5 ways, for example, as 150544 + 47389456 = 388^2 + 6884^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 18812 + ... + 21188.

Almost surely, 2^47540000 is an apocalyptic number.

47540000 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 47540000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58502367).

47540000 is an abundant number, since it is smaller than the sum of its proper divisors (69464734).

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

47540000 is an equidigital number, since it uses as much as digits as its factorization.

47540000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407 (or 2384 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 47540000 is about 6894.9256703753. The cubic root of 47540000 is about 362.2594519858.

Adding to 47540000 its reverse (4574), we get a palindrome (47544574).

The spelling of 47540000 in words is "forty-seven million, five hundred forty thousand".