29890455 has 32 divisors (see below), whose sum is σ = 57037824. Its totient is φ = 13069056.

The previous prime is 29890447. The next prime is 29890457. The reversal of 29890455 is 55409892.

It is not a de Polignac number, because 29890455 - 2³ = 29890447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29890457) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 3774 + ... + 8603.

It is an arithmetic number, because the mean of its divisors is an integer number (1782432).

Almost surely, 2^29890455 is an apocalyptic number.

29890455 is a deficient number, since it is larger than the sum of its proper divisors (27147369).

29890455 is a wasteful number, since it uses less digits than its factorization.

29890455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12415.

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 29890455 is about 5467.2163849623. The cubic root of 29890455 is about 310.3445873412.

The spelling of 29890455 in words is "twenty-nine million, eight hundred ninety thousand, four hundred fifty-five".