61494048 has 288 divisors, whose sum is σ = 226437120. Its totient is φ = 15367680.

The previous prime is 61494047. The next prime is 61494053. The reversal of 61494048 is 84049416.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (61494047) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 1042243 + ... + 1042301.

It is an arithmetic number, because the mean of its divisors is an integer number (786240).

Almost surely, 2^61494048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61494048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113218560).

61494048 is an abundant number, since it is smaller than the sum of its proper divisors (164943072).

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

61494048 is a wasteful number, since it uses less digits than its factorization.

61494048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 61494048 is about 7841.8140758373. The cubic root of 61494048 is about 394.7096044308.

The spelling of 61494048 in words is "sixty-one million, four hundred ninety-four thousand, forty-eight".