47266640 has 20 divisors (see below), whose sum is σ = 109895124. Its totient is φ = 18906624.

The previous prime is 47266627. The next prime is 47266663. The reversal of 47266640 is 4666274.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 27836176 + 19430464 = 5276^2 + 4408^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 47266640.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295337 + ... + 295496.

Almost surely, 2^47266640 is an apocalyptic number.

47266640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47266640 is an abundant number, since it is smaller than the sum of its proper divisors (62628484).

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

47266640 is a wasteful number, since it uses less digits than its factorization.

47266640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590846 (or 590840 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 47266640 is about 6875.0738177855. The cubic root of 47266640 is about 361.5637735525.

The spelling of 47266640 in words is "forty-seven million, two hundred sixty-six thousand, six hundred forty".