61276240 has 20 divisors (see below), whose sum is σ = 142467444. Its totient is φ = 24510464.

The previous prime is 61276231. The next prime is 61276261. The reversal of 61276240 is 4267216.

It can be written as a sum of positive squares in 2 ways, for example, as 16064064 + 45212176 = 4008^2 + 6724^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 61276199 and 61276208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382897 + ... + 383056.

Almost surely, 2^61276240 is an apocalyptic number.

It is an amenable number.

61276240 is an abundant number, since it is smaller than the sum of its proper divisors (81191204).

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

61276240 is a wasteful number, since it uses less digits than its factorization.

61276240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765966 (or 765960 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 61276240 is about 7827.9141538471. The cubic root of 61276240 is about 394.2430410604.

It can be divided in two parts, 61276 and 240, that added together give a palindrome (61516).

The spelling of 61276240 in words is "sixty-one million, two hundred seventy-six thousand, two hundred forty".