38429490 has 64 divisors (see below), whose sum is σ = 101699712. Its totient is φ = 9216000.

The previous prime is 38429483. The next prime is 38429497. The reversal of 38429490 is 9492483.

It is an interprime number because it is at equal distance from previous prime (38429483) and next prime (38429497).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38429497) 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 31 ways as a sum of consecutive naturals, for example, 32754 + ... + 33906.

It is an arithmetic number, because the mean of its divisors is an integer number (1589058).

Almost surely, 2^38429490 is an apocalyptic number.

38429490 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38429490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50849856).

38429490 is an abundant number, since it is smaller than the sum of its proper divisors (63270222).

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

38429490 is a wasteful number, since it uses less digits than its factorization.

38429490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1275.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 38429490 is about 6199.1523614120. The cubic root of 38429490 is about 337.4594080125.

The spelling of 38429490 in words is "thirty-eight million, four hundred twenty-nine thousand, four hundred ninety".