30780046 has 16 divisors (see below), whose sum is σ = 50497920. Its totient is φ = 13954680.

The previous prime is 30780037. The next prime is 30780077. The reversal of 30780046 is 64008703.

It is a super-2 number, since 2×30780046² = 1894822463524232, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30779996 and 30780023.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8065 + ... + 11251.

It is an arithmetic number, because the mean of its divisors is an integer number (3156120).

Almost surely, 2^30780046 is an apocalyptic number.

30780046 is a deficient number, since it is larger than the sum of its proper divisors (19717874).

30780046 is a wasteful number, since it uses less digits than its factorization.

30780046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3639.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 30780046 is about 5547.9767483291. The cubic root of 30780046 is about 313.3933341662.

Adding to 30780046 its reverse (64008703), we get a palindrome (94788749).

The spelling of 30780046 in words is "thirty million, seven hundred eighty thousand, forty-six".