47236440 has 32 divisors (see below), whose sum is σ = 141709680. Its totient is φ = 12596352.

The previous prime is 47236429. The next prime is 47236459. The reversal of 47236440 is 4463274.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 47236398 and 47236407.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196699 + ... + 196938.

Almost surely, 2^47236440 is an apocalyptic number.

47236440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47236440 is an abundant number, since it is smaller than the sum of its proper divisors (94473240).

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

47236440 is a wasteful number, since it uses less digits than its factorization.

47236440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393651 (or 393647 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 47236440 is about 6872.8771267934. The cubic root of 47236440 is about 361.4867526888.

The spelling of 47236440 in words is "forty-seven million, two hundred thirty-six thousand, four hundred forty".