61262240 has 48 divisors (see below), whose sum is σ = 155870568. Its totient is φ = 22619136.

The previous prime is 61262207. The next prime is 61262249. The reversal of 61262240 is 4226216.

It can be written as a sum of positive squares in 4 ways, for example, as 37797904 + 23464336 = 6148^2 + 4844^2 .

It is not an unprimeable number, because it can be changed into a prime (61262249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12647 + ... + 16806.

Almost surely, 2^61262240 is an apocalyptic number.

It is an amenable number.

61262240 is an abundant number, since it is smaller than the sum of its proper divisors (94608328).

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

61262240 is a wasteful number, since it uses less digits than its factorization.

61262240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29481 (or 29473 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 61262240 is about 7827.0198671014. The cubic root of 61262240 is about 394.2130140712.

Adding to 61262240 its reverse (4226216), we get a palindrome (65488456).

The spelling of 61262240 in words is "sixty-one million, two hundred sixty-two thousand, two hundred forty".