29489640 has 32 divisors (see below), whose sum is σ = 88469280. Its totient is φ = 7863872.

The previous prime is 29489627. The next prime is 29489659. The reversal of 29489640 is 4698492.

It is a junction number, because it is equal to n+sod(n) for n = 29489592 and 29489601.

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, 122754 + ... + 122993.

It is an arithmetic number, because the mean of its divisors is an integer number (2764665).

Almost surely, 2^29489640 is an apocalyptic number.

29489640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29489640 is an abundant number, since it is smaller than the sum of its proper divisors (58979640).

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

29489640 is a wasteful number, since it uses less digits than its factorization.

29489640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245761 (or 245757 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 29489640 is about 5430.4364465483. The cubic root of 29489640 is about 308.9511553380.

The spelling of 29489640 in words is "twenty-nine million, four hundred eighty-nine thousand, six hundred forty".