29428831 has 2 divisors, whose sum is σ = 29428832. Its totient is φ = 29428830.

The previous prime is 29428793. The next prime is 29428837. The reversal of 29428831 is 13882492.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 29428831 - 2¹¹ = 29426783 is a prime.

It is a super-2 number, since 2×29428831² = 1732112188053122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29428837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14714415 + 14714416.

It is an arithmetic number, because the mean of its divisors is an integer number (14714416).

Almost surely, 2^29428831 is an apocalyptic number.

29428831 is a deficient number, since it is larger than the sum of its proper divisors (1).

29428831 is an equidigital number, since it uses as much as digits as its factorization.

29428831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 37.

The square root of 29428831 is about 5424.8346518581. The cubic root of 29428831 is about 308.7386520222.

The spelling of 29428831 in words is "twenty-nine million, four hundred twenty-eight thousand, eight hundred thirty-one".