47740040 has 16 divisors (see below), whose sum is σ = 107415180. Its totient is φ = 19096000.

The previous prime is 47740039. The next prime is 47740051. The reversal of 47740040 is 4004774.

It can be written as a sum of positive squares in 2 ways, for example, as 40780996 + 6959044 = 6386^2 + 2638^2 .

It is a super-2 number, since 2×47740040² = 4558222838403200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47739991 and 47740009.

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 3 ways as a sum of consecutive naturals, for example, 596711 + ... + 596790.

Almost surely, 2^47740040 is an apocalyptic number.

47740040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47740040 is an abundant number, since it is smaller than the sum of its proper divisors (59675140).

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

47740040 is a wasteful number, since it uses less digits than its factorization.

47740040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193512 (or 1193508 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 47740040 is about 6909.4167626508. The cubic root of 47740040 is about 362.7668490954.

The spelling of 47740040 in words is "forty-seven million, seven hundred forty thousand, forty".