29438040 has 32 divisors (see below), whose sum is σ = 88314480. Its totient is φ = 7850112.

The previous prime is 29438039. The next prime is 29438047. The reversal of 29438040 is 4083492.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 29437989 and 29438007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29438047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122539 + ... + 122778.

Almost surely, 2^29438040 is an apocalyptic number.

29438040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

29438040 is an abundant number, since it is smaller than the sum of its proper divisors (58876440).

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

29438040 is a wasteful number, since it uses less digits than its factorization.

29438040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245331 (or 245327 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 29438040 is about 5425.6833670976. The cubic root of 29438040 is about 308.7708526186.

The spelling of 29438040 in words is "twenty-nine million, four hundred thirty-eight thousand, forty".