47173623 has 48 divisors (see below), whose sum is σ = 79453440. Its totient is φ = 24724224.

The previous prime is 47173619. The next prime is 47173663. The reversal of 47173623 is 32637174.

It is not a de Polignac number, because 47173623 - 2² = 47173619 is a prime.

It is a super-2 number, since 2×47173623² = 4450701413892258, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47173663) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 107238 + ... + 107676.

It is an arithmetic number, because the mean of its divisors is an integer number (1655280).

Almost surely, 2^47173623 is an apocalyptic number.

47173623 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

47173623 is a deficient number, since it is larger than the sum of its proper divisors (32279817).

47173623 is a wasteful number, since it uses less digits than its factorization.

47173623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516 (or 509 counting only the distinct ones).

The product of its digits is 21168, while the sum is 33.

The square root of 47173623 is about 6868.3056862664. The cubic root of 47173623 is about 361.3264415209.

The spelling of 47173623 in words is "forty-seven million, one hundred seventy-three thousand, six hundred twenty-three".