61438338 has 40 divisors (see below), whose sum is σ = 148262268. Its totient is φ = 18903456.

The previous prime is 61438337. The next prime is 61438387. The reversal of 61438338 is 83383416.

It is a happy number.

61438338 is a `hidden beast` number, since 614 + 3 + 8 + 3 + 38 = 666.

61438338 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 50168889 + 11269449 = 7083^2 + 3357^2 .

It is not an unprimeable number, because it can be changed into a prime (61438331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12481 + ... + 16692.

Almost surely, 2^61438338 is an apocalyptic number.

61438338 is an abundant number, since it is smaller than the sum of its proper divisors (86823930).

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

61438338 is a wasteful number, since it uses less digits than its factorization.

61438338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29200 (or 29191 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 61438338 is about 7838.2611592113. The cubic root of 61438338 is about 394.5903738361.

It can be divided in two parts, 61438 and 338, that added together give a triangular number (61776 = T₃₅₁).

The spelling of 61438338 in words is "sixty-one million, four hundred thirty-eight thousand, three hundred thirty-eight".