61430444 has 12 divisors (see below), whose sum is σ = 107614584. Its totient is φ = 30683424.

The previous prime is 61430443. The next prime is 61430461. The reversal of 61430444 is 44403416.

It is not an unprimeable number, because it can be changed into a prime (61430441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3302 + ... + 11565.

It is an arithmetic number, because the mean of its divisors is an integer number (8967882).

Almost surely, 2^61430444 is an apocalyptic number.

It is an amenable number.

61430444 is a deficient number, since it is larger than the sum of its proper divisors (46184140).

61430444 is a wasteful number, since it uses less digits than its factorization.

61430444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15904 (or 15902 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 61430444 is about 7837.7575874736. The cubic root of 61430444 is about 394.5734732605.

The spelling of 61430444 in words is "sixty-one million, four hundred thirty thousand, four hundred forty-four".