30477 has 4 divisors (see below), whose sum is σ = 40640. Its totient is φ = 20316.

The previous prime is 30469. The next prime is 30491. The reversal of 30477 is 77403.

Added to its reverse (77403) it gives a triangular number (107880 = T₄₆₄).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 77403 = 3 ⋅25801.

It is not a de Polignac number, because 30477 - 2³ = 30469 is a prime.

It is a D-number.

It is a Duffinian number.

30477 is a lucky number.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30477.

It is not an unprimeable number, because it can be changed into a prime (30427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5077 + ... + 5082.

It is an arithmetic number, because the mean of its divisors is an integer number (10160).

2³⁰⁴⁷⁷ is an apocalyptic number.

It is an amenable number.

30477 is a deficient number, since it is larger than the sum of its proper divisors (10163).

30477 is a wasteful number, since it uses less digits than its factorization.

30477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10162.

The product of its (nonzero) digits is 588, while the sum is 21.

The square root of 30477 is about 174.5766307385. The cubic root of 30477 is about 31.2361431899.

Adding to 30477 its reverse (77403), we get a triangular number (107880 = T₄₆₄).

The spelling of 30477 in words is "thirty thousand, four hundred seventy-seven".