29902428 has 36 divisors (see below), whose sum is σ = 79566760. Its totient is φ = 9442656.

The previous prime is 29902421. The next prime is 29902429. The reversal of 29902428 is 82420992.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 29902392 and 29902401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29902421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21175 + ... + 22542.

Almost surely, 2^29902428 is an apocalyptic number.

It is an amenable number.

29902428 is an abundant number, since it is smaller than the sum of its proper divisors (49664332).

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

29902428 is a wasteful number, since it uses less digits than its factorization.

29902428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43746 (or 43741 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 29902428 is about 5468.3112566861. The cubic root of 29902428 is about 310.3860192936.

The spelling of 29902428 in words is "twenty-nine million, nine hundred two thousand, four hundred twenty-eight".