29121396 has 24 divisors (see below), whose sum is σ = 68612544. Its totient is φ = 9612480.

The previous prime is 29121371. The next prime is 29121403. The reversal of 29121396 is 69312192.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10545 + ... + 13016.

It is an arithmetic number, because the mean of its divisors is an integer number (2858856).

Almost surely, 2^29121396 is an apocalyptic number.

It is an amenable number.

29121396 is an abundant number, since it is smaller than the sum of its proper divisors (39491148).

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

29121396 is a wasteful number, since it uses less digits than its factorization.

29121396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23671 (or 23669 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 29121396 is about 5396.4243717484. The cubic root of 29121396 is about 307.6597834404.

The spelling of 29121396 in words is "twenty-nine million, one hundred twenty-one thousand, three hundred ninety-six".