47961870 has 64 divisors (see below), whose sum is σ = 126904320. Its totient is φ = 11504000.

The previous prime is 47961869. The next prime is 47961887. The reversal of 47961870 is 7816974.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32611 + ... + 34049.

It is an arithmetic number, because the mean of its divisors is an integer number (1982880).

Almost surely, 2^47961870 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47961870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63452160).

47961870 is an abundant number, since it is smaller than the sum of its proper divisors (78942450).

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

47961870 is a wasteful number, since it uses less digits than its factorization.

47961870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1561.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 47961870 is about 6925.4508878484. The cubic root of 47961870 is about 363.3278613958.

Subtracting from 47961870 its reverse (7816974), we obtain a square (40144896 = 6336²).

It can be divided in two parts, 4796 and 1870, that added together give a palindrome (6666).

The spelling of 47961870 in words is "forty-seven million, nine hundred sixty-one thousand, eight hundred seventy".