30778332 has 24 divisors (see below), whose sum is σ = 77340816. Its totient is φ = 9470208.

The previous prime is 30778327. The next prime is 30778337. The reversal of 30778332 is 23387703.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (30778327) and next prime (30778337).

It is a junction number, because it is equal to n+sod(n) for n = 30778293 and 30778302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30778337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98493 + ... + 98804.

It is an arithmetic number, because the mean of its divisors is an integer number (3222534).

Almost surely, 2^30778332 is an apocalyptic number.

It is an amenable number.

30778332 is an abundant number, since it is smaller than the sum of its proper divisors (46562484).

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

30778332 is a wasteful number, since it uses less digits than its factorization.

30778332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197317 (or 197315 counting only the distinct ones).

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

The square root of 30778332 is about 5547.8222754519. The cubic root of 30778332 is about 313.3875169111.

The spelling of 30778332 in words is "thirty million, seven hundred seventy-eight thousand, three hundred thirty-two".