38407398 has 32 divisors (see below), whose sum is σ = 81312000. Its totient is φ = 12060576.

The previous prime is 38407373. The next prime is 38407427. The reversal of 38407398 is 89370483.

It is a super-2 number, since 2×38407398² = 2950256442260808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21840 + ... + 23532.

It is an arithmetic number, because the mean of its divisors is an integer number (2541000).

Almost surely, 2^38407398 is an apocalyptic number.

38407398 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

38407398 is an abundant number, since it is smaller than the sum of its proper divisors (42904602).

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

38407398 is a wasteful number, since it uses less digits than its factorization.

38407398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 38407398 is about 6197.3702487426. The cubic root of 38407398 is about 337.3947304061.

The spelling of 38407398 in words is "thirty-eight million, four hundred seven thousand, three hundred ninety-eight".