38453790 has 32 divisors (see below), whose sum is σ = 93806496. Its totient is φ = 10085760.

The previous prime is 38453761. The next prime is 38453801. The reversal of 38453790 is 9735483.

It is a Curzon number.

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, 8677 + ... + 12336.

It is an arithmetic number, because the mean of its divisors is an integer number (2931453).

Almost surely, 2^38453790 is an apocalyptic number.

38453790 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38453790 is an abundant number, since it is smaller than the sum of its proper divisors (55352706).

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

38453790 is a wasteful number, since it uses less digits than its factorization.

38453790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21084.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 38453790 is about 6201.1119970534. Note that the first 3 decimals coincide. The cubic root of 38453790 is about 337.5305212453.

The spelling of 38453790 in words is "thirty-eight million, four hundred fifty-three thousand, seven hundred ninety".