30252778 has 8 divisors (see below), whose sum is σ = 46056672. Its totient is φ = 14900556.

The previous prime is 30252763. The next prime is 30252823. The reversal of 30252778 is 87725203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112750 + ... + 113017.

It is an arithmetic number, because the mean of its divisors is an integer number (5757084).

Almost surely, 2^30252778 is an apocalyptic number.

30252778 is a deficient number, since it is larger than the sum of its proper divisors (15803894).

30252778 is a wasteful number, since it uses less digits than its factorization.

30252778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225836.

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 30252778 is about 5500.2525396567. The cubic root of 30252778 is about 311.5935220015.

The spelling of 30252778 in words is "thirty million, two hundred fifty-two thousand, seven hundred seventy-eight".