61238478 has 64 divisors (see below), whose sum is σ = 145248768. Its totient is φ = 16848000.

The previous prime is 61238477. The next prime is 61238483. The reversal of 61238478 is 87483216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61238473) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 243853 + ... + 244103.

It is an arithmetic number, because the mean of its divisors is an integer number (2269512).

Almost surely, 2^61238478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61238478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72624384).

61238478 is an abundant number, since it is smaller than the sum of its proper divisors (84010290).

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

61238478 is a wasteful number, since it uses less digits than its factorization.

61238478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457.

The product of its digits is 64512, while the sum is 39.

The square root of 61238478 is about 7825.5017730494. The cubic root of 61238478 is about 394.1620392184.

It can be divided in two parts, 61238 and 478, that added together give a palindrome (61716).

The spelling of 61238478 in words is "sixty-one million, two hundred thirty-eight thousand, four hundred seventy-eight".