47388690 has 96 divisors (see below), whose sum is σ = 133436160. Its totient is φ = 11622912.

The previous prime is 47388667. The next prime is 47388713. The reversal of 47388690 is 9688374.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (47388667) and next prime (47388713).

It is a super-2 number, since 2×47388690² = 4491375879832200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 71581 + ... + 72239.

It is an arithmetic number, because the mean of its divisors is an integer number (1389960).

Almost surely, 2^47388690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47388690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66718080).

47388690 is an abundant number, since it is smaller than the sum of its proper divisors (86047470).

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

47388690 is a wasteful number, since it uses less digits than its factorization.

47388690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 47388690 is about 6883.9443635172. The cubic root of 47388690 is about 361.8747111777.

The spelling of 47388690 in words is "forty-seven million, three hundred eighty-eight thousand, six hundred ninety".