38620740 has 48 divisors (see below), whose sum is σ = 108456768. Its totient is φ = 10268544.

The previous prime is 38620717. The next prime is 38620759. The reversal of 38620740 is 4702683.

38620740 = T₁₇₆ + T₁₇₇ + ... + T₆₁₈.

It is a super-3 number, since 3×38620740³ (a number of 24 digits) contains 333 as substring.

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 = 38620698 and 38620707.

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, 25854 + ... + 27306.

It is an arithmetic number, because the mean of its divisors is an integer number (2259516).

Almost surely, 2^38620740 is an apocalyptic number.

38620740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38620740 is an abundant number, since it is smaller than the sum of its proper divisors (69836028).

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

38620740 is a wasteful number, since it uses less digits than its factorization.

38620740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908 (or 1906 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 38620740 is about 6214.5587132153. The cubic root of 38620740 is about 338.0182873525.

The spelling of 38620740 in words is "thirty-eight million, six hundred twenty thousand, seven hundred forty".