47470815 has 48 divisors (see below), whose sum is σ = 96602688. Its totient is φ = 21109248.

The previous prime is 47470811. The next prime is 47470823. The reversal of 47470815 is 51807474.

It is not a de Polignac number, because 47470815 - 2² = 47470811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47470815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47470811) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9619 + ... + 13691.

It is an arithmetic number, because the mean of its divisors is an integer number (2012556).

Almost surely, 2^47470815 is an apocalyptic number.

47470815 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47470815 is an abundant number, since it is smaller than the sum of its proper divisors (49131873).

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

47470815 is a wasteful number, since it uses less digits than its factorization.

47470815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4128 (or 4125 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 47470815 is about 6889.9067482804. The cubic root of 47470815 is about 362.0836345124.

It can be divided in two parts, 474 and 70815, that added together give a square (71289 = 267²).

The spelling of 47470815 in words is "forty-seven million, four hundred seventy thousand, eight hundred fifteen".