29780428 has 12 divisors (see below), whose sum is σ = 52894072. Its totient is φ = 14667840.

The previous prime is 29780411. The next prime is 29780431. The reversal of 29780428 is 82408792.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55293 + ... + 55828.

Almost surely, 2^29780428 is an apocalyptic number.

It is an amenable number.

29780428 is a deficient number, since it is larger than the sum of its proper divisors (23113644).

29780428 is a wasteful number, since it uses less digits than its factorization.

29780428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111192 (or 111190 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 29780428 is about 5457.1446746444. The cubic root of 29780428 is about 309.9633255261.

The spelling of 29780428 in words is "twenty-nine million, seven hundred eighty thousand, four hundred twenty-eight".