47849140 has 24 divisors (see below), whose sum is σ = 103200552. Its totient is φ = 18622080.

The previous prime is 47849119. The next prime is 47849143. The reversal of 47849140 is 4194874.

It can be written as a sum of positive squares in 4 ways, for example, as 2178576 + 45670564 = 1476^2 + 6758^2 .

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a self number, because there is not a number n which added to its sum of digits gives 47849140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47849143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31591 + ... + 33070.

It is an arithmetic number, because the mean of its divisors is an integer number (4300023).

Almost surely, 2^47849140 is an apocalyptic number.

It is an amenable number.

47849140 is an abundant number, since it is smaller than the sum of its proper divisors (55351412).

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

47849140 is a wasteful number, since it uses less digits than its factorization.

47849140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64707 (or 64705 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 47849140 is about 6917.3072795706. The cubic root of 47849140 is about 363.0429817536.

It can be divided in two parts, 4784 and 9140, that added together give a square (13924 = 118²).

The spelling of 47849140 in words is "forty-seven million, eight hundred forty-nine thousand, one hundred forty".