29228540 has 24 divisors (see below), whose sum is σ = 66960432. Its totient is φ = 10628480.

The previous prime is 29228513. The next prime is 29228581. The reversal of 29228540 is 4582292.

It is a junction number, because it is equal to n+sod(n) for n = 29228497 and 29228506.

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, 66209 + ... + 66648.

It is an arithmetic number, because the mean of its divisors is an integer number (2790018).

Almost surely, 2^29228540 is an apocalyptic number.

29228540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29228540 is an abundant number, since it is smaller than the sum of its proper divisors (37731892).

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

29228540 is a wasteful number, since it uses less digits than its factorization.

29228540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132877 (or 132875 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 29228540 is about 5406.3425714618. The cubic root of 29228540 is about 308.0366375712.

The spelling of 29228540 in words is "twenty-nine million, two hundred twenty-eight thousand, five hundred forty".