47312740 has 12 divisors (see below), whose sum is σ = 99356796. Its totient is φ = 18925088.

The previous prime is 47312737. The next prime is 47312777. The reversal of 47312740 is 4721374.

It can be written as a sum of positive squares in 2 ways, for example, as 30404196 + 16908544 = 5514^2 + 4112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47312699 and 47312708.

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, 1182799 + ... + 1182838.

It is an arithmetic number, because the mean of its divisors is an integer number (8279733).

Almost surely, 2^47312740 is an apocalyptic number.

It is an amenable number.

47312740 is an abundant number, since it is smaller than the sum of its proper divisors (52044056).

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

47312740 is a wasteful number, since it uses less digits than its factorization.

47312740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365646 (or 2365644 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 47312740 is about 6878.4256919734. The cubic root of 47312740 is about 361.6812818981.

The spelling of 47312740 in words is "forty-seven million, three hundred twelve thousand, seven hundred forty".