61438884 has 48 divisors (see below), whose sum is σ = 163473408. Its totient is φ = 17791488.

The previous prime is 61438879. The next prime is 61438889. The reversal of 61438884 is 48883416.

It is an interprime number because it is at equal distance from previous prime (61438879) and next prime (61438889).

It is not an unprimeable number, because it can be changed into a prime (61438889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8932 + ... + 14235.

It is an arithmetic number, because the mean of its divisors is an integer number (3405696).

Almost surely, 2^61438884 is an apocalyptic number.

It is an amenable number.

61438884 is an abundant number, since it is smaller than the sum of its proper divisors (102034524).

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

61438884 is a wasteful number, since it uses less digits than its factorization.

61438884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23204 (or 23202 counting only the distinct ones).

The product of its digits is 147456, while the sum is 42.

The square root of 61438884 is about 7838.2959882873. The cubic root of 61438884 is about 394.5915427355.

The spelling of 61438884 in words is "sixty-one million, four hundred thirty-eight thousand, eight hundred eighty-four".